From WordNet (r) 3.0 (2006):
tail n 1: the posterior part of the body of a vertebrate especially when elongated and extending beyond the trunk or main part of the body 2: the time of the last part of something; "the fag end of this crisis-ridden century"; "the tail of the storm" [syn: fag end, tail, tail end] 3: any projection that resembles the tail of an animal [syn: tail, tail end] 4: the fleshy part of the human body that you sit on; "he deserves a good kick in the butt"; "are you going to sit on your fanny and do nothing?" [syn: buttocks, nates, arse, butt, backside, bum, buns, can, fundament, hindquarters, hind end, keister, posterior, prat, rear, rear end, rump, stern, seat, tail, tail end, tooshie, tush, bottom, behind, derriere, fanny, ass] 5: a spy employed to follow someone and report their movements [syn: tail, shadow, shadower] 6: (usually plural) the reverse side of a coin that does not bear the representation of a person's head [ant: head] 7: the rear part of an aircraft [syn: tail, tail assembly, empennage] 8: the rear part of a ship [syn: stern, after part, quarter, poop, tail] v 1: go after with the intent to catch; "The policeman chased the mugger down the alley"; "the dog chased the rabbit" [syn: chase, chase after, trail, tail, tag, give chase, dog, go after, track] 2: remove or shorten the tail of an animal [syn: dock, tail, bob] 3: remove the stalk of fruits or berries