Definitions
1.nounThe single or split (then rather plural) bottom part of a shirt, below the waist, especially in the back, which, when not tucked into trousers or other vestment, hangs over the wearer's tail-end, like a tail.
2.noun(by extension) The tail-end or periphery of something.
3.nounA tenuous connection.
4.nounA distant kinship.
5.nounA small portion
6.nounSomething small and unimportant.