Definitions:
the hindmost part of an animal, especially when prolonged beyond the rest of the body, such as the flexible extension of the backbone in a vertebrate, the feathers at the hind end of a bird, or a terminal appendage in an insect

a thing resembling an animal's tail in its shape or position, typically extending downwards or outwards at the end of something

the end of a long train or line of people or vehicles

a person secretly following another to observe their movements

a person's buttocks

the side of a coin without the image of a head on it (used when tossing a coin to determine a winner)

follow and observe (someone) closely, especially in secret

provide with a tail

(of an object in flight) drift or curve in a particular direction

remove the stalks or ends of (fruit or vegetables) in preparation for cooking.

pull on the end of (a rope) after it has been wrapped round t