My young companion was a bit of a poet.
T. Hook.
This word is used, also, like jot and whit, to express the smallest degree; as, he is not a bit wiser.
3. A tool for boring, of various forms and sizes, usually turned by means of a brace or bitstock. See Bitstock.
4. The part of a key which enters the lock and acts upon the bolt and tumblers. Knight.