1.  library(n = noun.artifact) - a room where books are kept; "they had brandy in the library"
is a kind of room
is a part of house

2.  library(n = noun.group) - a collection of literary documents or records kept for reference or borrowing;
is a kind of accumulation, aggregation, assemblage, collection
has particulars: bibliotheca, public library, rental collection

3.  library(n = noun.artifact) depository library - a depository built to contain books and other materials for reading and study;
is a kind of deposit, depositary, depository, repository
has parts: carrel, carrell, cubicle, stall, reading room, stacks
has particulars: athenaeum, atheneum, circulating library, lending library

4.  library(n = noun.group) program library, subroutine library - (computing) a collection of standard programs and subroutines that are stored and available for immediate use;
is a kind of accumulation, aggregation, assemblage, collection
has parts: library program, cataloged procedure, library routine

5.  library(n = noun.artifact) - a building that houses a collection of books and other materials;
is a kind of building, edifice
has particulars: national library of medicine, u.s. national library of medicine, united states national library of medicine

1.  A considerable collection of books kept for use, and not as merchandise; as, a private library; a public library. [1913 Webster]

2.  A building or apartment appropriated for holding such a collection of books. Holland. [1913 Webster]

library, n. (pl. -ies)
1 a a collection of books etc. for use by the public or by members of a group. b a person's collection of books.
2 a room or building containing a collection of books (for reading or reference rather than for sale).
3 a a similar collection of films, records, computer routines, etc. b the place where these are kept.
4 a series of books issued by a publisher in similar bindings etc., usu. as a set.
5 a public institution charged with the care of a collection of books, films, etc.

Idiom:
library edition a strongly bound edition. library school a college or a department in a university or polytechnic teaching librarianship. library science the study of librarianship.

Etymology:
ME f. OF librairie f. L libraria (taberna shop), fem. of librarius bookseller's, of books, f. liber libri book

N  booklet, writing, work, volume, tome, opuscule, tract, tractate, livret, brochure, libretto, handbook, codex, manual, pamphlet, enchiridion, circular, publication, chap book, part, issue, number livraison, album, portfolio, periodical, serial, magazine, ephemeris, annual, journal, paper, bill, sheet, broadsheet, leaf, leaflet, fly leaf, page, quire, ream, chapter, section, head, article, paragraph, passage, clause, endpapers, frontispiece, cover, binding, folio, quarto, octavo, duodecimo, sextodecimo, octodecimo, encyclopedia, encompilation, library, bibliotheca, press, definitive work, treatise, comprehensive treatise (dissertation), writer, author, litterateur, essayist, journalism, pen, scribbler, the scribbling race, literary hack, Grub-street writer, writer for the press, gentleman of the press, representative of the press, adjective jerker, diaskeaust, ghost, hack writer, ink slinger, publicist, reporter, penny a liner, editor, subeditor, playwright, poet, bookseller, publisher, bibliopole, bibliopolist, librarian, bookstore, bookshop, bookseller's shop, knowledge of books, bibliography, book learning, among the giant fossils of my past, craignez tout d'un auteur en courroux, for authors nobler palms remain, I lived to write and wrote to live, look in thy heart and write, there is no Past so long as Books shall live, the public mind is the creation of the Master-Writ, volumes that I prize above my dukedom.

N  receptacle, inclosure, recipient, receiver, reservatory, compartment, cell, cellule, follicle, hole, corner, niche, recess, nook, crypt, stall, pigeonhole, cove, oriel, cave, capsule, vesicle, cyst, pod, calyx, cancelli, utricle, bladder, pericarp, udder, stomach, paunch, venter, ventricle, crop, craw, maw, gizzard, breadbasket, mouth, pocket, pouch, fob, sheath, scabbard, socket, bag, sac, sack, saccule, wallet, cardcase, scrip, poke, knit, knapsack, haversack, sachel, satchel, reticule, budget, net, ditty bag, ditty box, housewife, hussif, saddlebags, portfolio, quiver, chest, box, coffer, caddy, case, casket, pyx, pix, caisson, desk, bureau, reliquary, trunk, portmanteau, band-box, valise, grip, grip sack, skippet, vasculum, boot, imperial, vache, cage, manger, rack, vessel, vase, bushel, barrel, canister, jar, pottle, basket, pannier, buck-basket, hopper, maund, creel, cran, crate, cradle, bassinet, wisket, whisket, jardiniere, corbeille, hamper, dosser, dorser, tray, hod, scuttle, utensil, brazier, cuspidor, spittoon, cistern, vat, caldron, barrel, cask, drum, puncheon, keg, rundlet, tun, butt, cag, firkin, kilderkin, carboy, amphora, bottle, jar, decanter, ewer, cruse, caraffe, crock, kit, canteen, flagon, demijohn, flask, flasket, stoup, noggin, vial, phial, cruet, caster, urn, epergne, salver, patella, tazza, patera, pig gin, big gin, tyg, nipperkin, pocket pistol, tub, bucket, pail, skeel, pot, tankard, jug, pitcher, mug, pipkin, galipot, gallipot, matrass, receiver, retort, alembic, bolthead, capsule, can, kettle, bowl, basin, jorum, punch bowl, cup, goblet, chalice, tumbler, glass, rummer, horn, saucepan, skillet, posnet, tureen, beaker, flask, Erlenmeyer flask, Florence flask, round-bottom flask, graduated cylinder, test tube, culture tube, pipette, Pasteur pipette, disposable pipette, syringe, vial, carboy, vacuum flask, Petri dish, microtiter tray, centrifuge tube, bail, beaker, billy, canakin, catch basin, catch drain, chatti, lota, mussuk, schooner, spider, terrine, toby, urceus, plate, platter, dish, trencher, calabash, porringer, potager, saucer, pan, crucible, glassware, tableware, vitrics, compote, gravy boat, creamer, sugar bowl, butter dish, mug, pitcher, punch bowl, chafing dish, shovel, trowel, spoon, spatula, ladle, dipper, tablespoon, watch glass, thimble, closet, commode, cupboard, cellaret, chiffonniere, locker, bin, bunker, buffet, press, clothespress, safe, sideboard, drawer, chest of drawers, chest on chest, highboy, lowboy, till, scrutoire, secretary, secretaire, davenport, bookcase, cabinet, canterbury, escritoire, etagere, vargueno, vitrine, chamber, apartment, room, cabin, office, court, hall, atrium, suite of rooms, apartment, flat, story, saloon, salon, parlor, by-room, cubicle, presence chamber, sitting room, best room, keeping room, drawing room, reception room, state room, gallery, cabinet, closet, pew, box, boudoir, adytum, sanctum, bedroom, dormitory, refectory, dining room, salle-a-manger, nursery, schoolroom, library, study, studio, billiard room, smoking room, den, stateroom, tablinum, tenement, bath room, bathroom, toilet, lavatory, powder room, john, jakes, necessary, loo, men's room, ladies' room, rest room, (uncleanness), 653 attic, loft, garret, cockloft, clerestory, cellar, vault, hold, cockpit, cubbyhole, cook house, entre-sol, mezzanine floor, ground floor, rez-de-chaussee, basement, kitchen, pantry, bawarchi-khana, scullery, offices, storeroom, lumber room, dairy, laundry, coach house, garage, hangar, outhouse, penthouse, lean-to, portico, porch, stoop, stope, veranda, patio, lanai, terrace, deck, lobby, court, courtyard, hall, vestibule, corridor, passage, breezeway, ante room, ante chamber, lounge, piazza, veranda, conservatory, greenhouse, bower, arbor, summerhouse, alcove, grotto, hermitage, lodging, bed, carriage, capsular, saccular, sacculated, recipient, ventricular, cystic, vascular, vesicular, cellular, camerated, locular, multilocular, polygastric, marsupial, siliquose, siliquous.

bachelor of arts in library science, circulating library, depository library, lending library, library card, library catalog, library catalogue, library fine, library paste, library program, library routine, library science, master of arts in library science, master of library science, nag hammadi library, national library of medicine, program library, public library, subroutine library, u.s. national library of medicine, united states national library of medicine