\Tail"piece`\, n.
1. (Locks) A piece for transmitting motion from the hub of a
   lock to the latch bolt.
2. The part of a telescope containing the adjusting device
   for the eyepiece, etc.

\Tail"piece`\, n.
1. A piece at the end; an appendage.
2. (Arch.) One of the timbers which tail into a header, in
   floor framing. See Illust. of {Header}.
3. (Print.) 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.