tail

[1]	dog , follow , trail , stalk , shadow , track
[2]	chase , chase after , trail , tag , give chase , dog , go after , track
[3]	dock , bob

[1]	appendage , brush (of a fox) , scut (of a hare , rabbit , of deer) , dock , caudal fin (of a fish) , uropygium (of a bird) , pope's/parson's nose , tailpiece , flag
[2]	rear end , fag end , tail end , tail-end , backside , buttocks , croup , rump , posterior(s) , bottom , (Colloq) behind , hinie , (Colloq) (Slang) (Brit) bum , arse , (US) ass
[3]	reverse , tail end
[4]	buttocks , nates , arse , butt , backside , bum , buns , can , fundament , hindquarters , hind end , keister , posterior , prat , rear , rear end , rump , stern , seat , tail end , tooshie , tush , bottom , behind , derriere , fanny , ass
[5]	shadow , shadower
[6]	tail assembly , empennage
[7]	stern , after part , quarter , poop