TAILPIECE
tailpiece
(noun) appendage added to extend the length of something
Source: WordNet® 3.1
Etymology
Noun
tailpiece (plural tailpieces)
An appendage or appendix.
(music, lutherie) An element, often triangular, to which the strings of a violin, guitar, etc. are attached at the lower end of an instrument.
(architecture) A short joist between a header and a wall.
The part of a telescope containing the adjusting device for the eyepiece, etc.
The part of a lock that transmits motion from the hub to the latch bolt.
Source: Wiktionary
Tail"piece`, n.
1. A piece at the end; an appendage.
2. (Arch.)
Definition: One of the timbers which tail into a header, in floor framing.
See Illust. of Header.
3. (Print.)
Definition: An ornament placed at the bottom of a short page to fill up the
space, or at the end of a book. Savage.
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.
Source: Webster’s Unabridged Dictionary 1913 Edition