day bed(n = noun.artifact) studio couch - convertible consisting of an upholstered couch that can be converted into a double bed;
is a kind of convertible, sofa bed

admission day, air bed, all day long, all fools' day, all saints' day, all souls' day, alveolar bed, american indian day, annunciation day, april fools' day, arbor day, armed forces day, armistice day, ascension day, asparagus bed, baby bed, baby's bed, bacteria bed, bastille day, bed, bed and breakfast, bed bug, bed check, bed clothing, bed cover, bed covering, bed down, bed ground, bed jacket, bed linen, bed of flowers, bed of roses, bed pillow, bed rest, bed rock, bed screw, bed sheet, bed steps, bed wetter, bissextile day, boxing day, break of day, break of the day, built in bed, built-in bed, bunk bed, by the day, calendar day, call it a day, camp bed, candlemas day, capillary bed, childermas day, christian holy day, christmas day, citizenship day, civil day, clarence day, clarence shepard day jr., class day, columbus day, commencement day, commonwealth day, creek bed, day, day after day, day blindness, day boarder, day book, day by day, day camp, day care, day care center, day game, day in and day out, day in day out, day jessamine, day laborer, day labourer, day lily, day nursery, day of atonement, day of judgement, day of judgment, day of reckoning, day of remembrance, day of rest, day of the month, day of the week, day off, day return, day school, day shift, day watch, decoration day, degree day, discovery day, divan bed, dominion day, double bed, each day, easter day, election day, ember day, empire day, every day, fast day, father's day, feast day, feather bed, fete day, field day, filter bed, flag day, flower bed, forever and a day, future day, gain the day, go to bed, good day, groundhog day, guy fawkes day, high holy day, holy day, holy day of obligation, holy innocents' day, hospital bed, inauguration day, independence day, innocents' day, jewish holy day, judgement day, judgment day, labor day, lady day, lake bed, lammas day, last day, leap day, lord's day, lunar day, major fast day, marital bed, market day, marriage bed, martin luther king day, may day, mean solar day, memorial day, michaelmas day, midsummer day, midsummer's day, minor fast day, mother's day, murphy bed, naked as the day one was born, naked as the day you were born, name day, natal day, new year's day, night and day, order of the day, ore bed, oyster bed, pan american day, pancake day, patriot's day, patriots' day, pig bed, pioneers' day, platform bed, polling day, poppy day, present day, presidents' day, procrustean bed, quarter day, rag day, railroad bed, rainy day, red-letter day, remembrance day, rest day, robert e lee day, rogation day, rose bed, saint patrick's day, saint valentine's day, saint's day, school day, seize the day, sidereal day, single bed, six day war, sleigh bed, sofa bed, solar day, speech day, st john's day, st martin's day, st patrick's day, st valentine's day, tag day, term day, test bed, texas independence day, thanksgiving day, three kings' day, time of day, transfiguration day, truck bed, truckle bed, trundle bed, tulip bed, turnip bed, twelfth day, twin bed, united nations day, unlucky day, v-e day, v-j day, valentine day, valentine's day, veterans day, veterans' day, victoria day, victory day, washing day, water bed, wedding day, work day, working day