Fob \Fob\ (f[o^]b), n. [Cf. Prov. G. fuppe pocket.]
1. A little pocket for a watch; -- callled also a {watch
pocket}.
[1913 Webster]
2. a short chain or ribbon attached to a pocket watch,
usually worn hanging out of the watch pocket, and used to
conveniently remove the watch from the watch pocket.
[PJC]
{Fob chain}, a short watch chain worn with a watch carried in
the fob; a fob[2].
[1913 Webster]