black swan(n = noun.animal) cygnus atratus - large Australian swan having black plumage and a red bill;
is a kind of swan
is a member of cygnus, genus cygnus

N  unconformity, nonconformity, unconformity, disconformity, unconventionality, informality, abnormity, abnormality, anomaly, anomalousness, exception, peculiarity, infraction of law, breach, of law, violation of law, violation of custom, violation of usage, infringement of law, infringement of custom, infringement of usage, teratism, eccentricity, bizarrerie, oddity, je ne sais quoi, monster, monstrosity, rarity, freak, freak of Nature, weirdo, mutant, rouser, snorter, individuality, idiosyncrasy, originality, mannerism, aberration, irregularity, variety, singularity, exemption, salvo, nonconformist, nondescript, character, original, nonesuch, nonsuch, monster, prodigy, wonder, miracle, curiosity, flying fish, black sheep, black swan, lusus naturae, rara avis, queer fish, mongrel, random breed, half-caste, half-blood, half-breed, metis, crossbreed, hybrid, mule, hinny, mulatto, tertium quid, hermaphrodite, phoenix, chimera, hydra, sphinx, minotaur, griffin, griffon, centaur, saggittary, kraken, cockatrice, wyvern, roc, dragon, sea serpent, mermaid, merman, merfolk, unicorn, Cyclops, men whose heads do grow beneath their shoulders, teratology, fish out of water, neither one thing nor another, neither fish nor fowl, neither fish flesh nor fowl nor good red herring, one in a million, one in a way, one in a thousand, outcast, outlaw, off the beaten track, oasis, uncomformable, exceptional, abnormal, abnormous, anomalous, anomalistic, out of order, out of place, out of keeping, out of tune, out of one's element, irregular, arbitrary, teratogenic, lawless, informal, aberrant, stray, wandering, wanton, peculiar, exclusive, unnatural, eccentric, egregious, out of the beaten track, off the beaten track, out of the common, out of the common run, beyond the pale of, out of the pale of, misplaced, funny, unusual, unaccustomed, uncustomary, unwonted, uncommon, rare, curious, odd, extraordinary, out of the ordinary, strange, monstrous, wonderful, unexpected, unaccountable, outre, out of the way, remarkable, noteworthy, queer, quaint, nondescript, none such, sui generis, unfashionable, fantastic, grotesque, bizarre, outlandish, exotic, tombe des nues, preternatural, denaturalized, heterogeneous, heteroclite, amorphous, mongrel, amphibious, epicene, half blood, hybrid, androgynous, androgynal, asymmetric, adelomorphous, bisexual, hermaphrodite, monoclinous, qualified, singular, unique, one-of-a-kind, newfangled, novel, non-classical, original, unconventional, unheard of, unfamiliar, undescribed, unprecedented, unparalleled, unexampled, unconformably, except, unless, save barring, beside, without, save and except, let alone, however, yet, but, once in a blue moon, once in a million years, Int, what on earth!, what in the world!, What the devil!, Holy cow!, Can you top that?, Sacre bleu, never was seen the like, never was heard the like, never was known the like, I could hardly believe it, I saw it, but I didn't believe it.

american black bear, animal black, asian black grouse, asiatic black bear, bewick's swan, black, black africa, black african, black american, black and blue, black and gold garden spider, black and tan, black and white, black angus, black apricot, black archangel, black art, black ash, black bamboo, black bass, black bead, black bean, black bear, black bearberry, black bee, black beech, black belt, black bile, black bindweed, black birch, black body, black book, black box, black bread, black bream, black bryony, black buck, black buffalo, black calla, black caraway, black carpet beetle, black cat, black catechu, black cherry, black cherry tree, black cock, black cohosh, black comedy, black cottonwood, black crappie, black currant, black cypress pine, black death, black diamond, black disease, black duck, black economy, black elder, black elderberry, black english, black english vernacular, black eye, black felt cup, black flag, black flags, black fly, black forest, black fox, black friar, black friday, black fritillary, black grama, black greasewood, black grouse, black guillemot, black gum, black hamburg, black hand, black haw, black hawk, black hellebore, black hemlock, black henbane, black hickory, black hills, black hole, black hole of calcutta, black hollander, black horehound, black huckleberry, black humor, black humour, black ice, black jack pershing, black kite, black knapweed, black knot, black larch, black lead, black letter, black locust, black lotion, black lovage, black lung, black lung disease, black magic, black maire, black mallee, black mamba, black man, black mangrove, black margate, black maria, black mark, black market, black marketeer, black marlin, black mass, black medick, black monday, black monk, black morel, black moss, black mulberry, black music, black muslim, black mustard, black nightshade, black oak, black olive, black opal, black operation, black out, black panther, black panthers, black pea, black pepper, black person, black pine, black plague, black poplar, black power, black prince, black pudding, black race, black racer, black raspberry, black rat, black rat snake, black rhinoceros, black rock desert, black rockweed, black rod, black root rot fungus, black rot, black rudderfish, black sage, black sally, black salsify, black salts, black saltwort, black sea, black sea bass, black september, black september movement, black sheep, black snake, black snakeroot, black spanish, black spleenwort, black spot, black spruce, black squirrel, black stork, black sumac, black tai, black tea, black tie, black tongue, black tree fern, black turnstone, black vomit, black vulture, black walnut, black walnut tree, black wash, black wattle, black weevil, black whale, black widow, black willow, black woman, bluish black, bone black, brunswick black, california black oak, california black walnut, carbon black, chinese black mushroom, coal black, european black alder, european black currant, european black grouse, frankfort black, ivory black, japanese black pine, jet black, joseph black, kentucky black bass, largemouth black bass, largemouthed black bass, little black ant, magnase black, mexican black cherry, mute swan, oriental black mushroom, pitch black, platinum black, shirley temple black, shoe black, smallmouth black bass, smallmouthed black bass, soot black, spotted black bass, swan, swan dive, swan orchid, swan river daisy, swan river everlasting, swan song, trumpeter swan, tundra swan, welsh black, whistling swan, whooper swan