tailpieces is a form of:

Tailpiece



ENGLISH MEANING
noun
1.
A piece at the end; an appendage.
2.
One of the timbers which tail into a header, in floor framing.
3.
An ornament placed at the bottom of a short page to fill up the space, or at the end of a book.
4.
A piece of ebony or other material attached to the lower end of a violin or similar instrument, to which the strings are fastened.
5.
A piece for transmitting motion from the hub of a lock to the latch bolt.
6.
The part of a telescope containing the adjusting device for the eyepiece, etc.