TAIL

adj. of or pertaining to a tail; situated in the tail or rear section (as of an aircraft)

v. remove the tail of an animal; furnish with a tail; come after, follow behind; gradually stop or disappear; follow a person in order to observe his activities

n. rear appendage on some animals; longer section at the back of an evening dress or jacket; detective who follows a person and keeps track of his activities; woman as a sex object (Derogatory Slang); buttocks, derriere (Slang)

The tail is the section at the rear end of an animal's body; in general, the term refers to a distinct, flexible appendage to the torso. It is the part of the body that corresponds roughly to the sacrum and coccyx in mammals and birds. While tails are primarily a feature of vertebrates, some invertebrates—including  scorpions and springtails—have tail-like appendages.
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Tail any slender appendage. tail of spermatozoon the flagellum of a spermatozoon, which contains the axonema; it has four regions: the neck, [more]Tail - Community and Resources

Noun
1. the posterior part of the body of a vertebrate especially when elongated and extending beyond the trunk or main part of the body
(hypernym) process, outgrowth, appendage
(hyponym) rattle
(part-holonym) vertebrate, craniate
(part-meronym) dock
(derivation) dock, bob
2. the time of the last part of something; "the fag end of this crisis-ridden century"; "the tail of the storm"
(synonym) fag end, tail end
(hypernym) end, ending
3. any projection that resembles the tail of an animal
(synonym) tail end
(hypernym) projection
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?"
(synonym) 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
(hypernym) body part
(part-holonym) torso, trunk, body
5. a spy employed to follow someone and report their movements
(synonym) shadow, shadower
(hypernym) follower
(derivation) chase, chase after, trail, tag, give chase, dog, go after, track
6. (usually plural) the reverse side of a coin that does not bear the representation of a person's head
(antonym) head
(hypernym) reverse, verso
(part-holonym) coin
(classification) plural, plural form
7. the rear part of an aircraft
(synonym) tail assembly, empennage
(hypernym) rear, back
(part-holonym) fuselage
(part-meronym) horizontal tail
8. the rear part of a ship
(synonym) stern, after part, quarter, poop
(hypernym) rear, back
(part-holonym) ship
(part-meronym) escutcheon
Verb
1. go after with the intent to catch; "The policeman chased the mugger down the alley"; "the dog chased the rabbit"
(synonym) chase, chase after, trail, tag, give chase, dog, go after, track
(hypernym) pursue, follow
(hyponym) quest
(derivation) shadow, shadower
2. remove or shorten the tail of an animal
(synonym) dock, bob
(hypernym) cut
3. remove the stalk of fruits or berries
(hypernym) top, pinch

(a.)
Limited; abridged; reduced; curtailed; as, estate tail.
  

(n.)
A downy or feathery appendage to certain achenes. It is formed of the permanent elongated style.
  

(n.)
A portion of an incision, at its beginning or end, which does not go through the whole thickness of the skin, and is more painful than a complete incision; -- called also tailing.
  

(n.)
A rope spliced to the strap of a block, by which it may be lashed to anything.
  

(n.)
A train or company of attendants; a retinue.
  

(n.)
Any long, flexible terminal appendage; whatever resembles, in shape or position, the tail of an animal, as a catkin.
  

(n.)
Hence, the back, last, lower, or inferior part of anything, -- as opposed to the head, or the superior part.
  

(n.)
Limitation; abridgment.
  

(n.)
One of the strips at the end of a bandage formed by splitting the bandage one or more times.
  

(n.)
Same as Tailing, 4.
  

(n.)
See Tailing, n., 5.
  

(n.)
The bottom or lower portion of a member or part, as a slate or tile.
  

(n.)
The distal tendon of a muscle.
  

(n.)
The part of a note which runs perpendicularly upward or downward from the head; the stem.
  

(n.)
The side of a coin opposite to that which bears the head, effigy, or date; the reverse; -- rarely used except in the expression "heads or tails," employed when a coin is thrown up for the purpose of deciding some point by its fall.
  

(n.)
The terminal, and usually flexible, posterior appendage of an animal.
  

(v. i.)
To hold by the end; -- said of a timber when it rests upon a wall or other support; -- with in or into.
  

(v. i.)
To swing with the stern in a certain direction; -- said of a vessel at anchor; as, this vessel tails down stream.
  

(v. t.)
To follow or hang to, like a tail; to be attached closely to, as that which can not be evaded.
  

(v. t.)
To pull or draw by the tail.