Noun

1. the cutting part of a drill; usually pointed and threaded and is replaceable in a brace or bitstock or drill press
2. piece of metal held in horse's mouth by reins and used to control the horse while riding
3. a short theatrical performance that is part of a longer program
4. a small fragment
5. an instance of some kind
6. a small amount of solid food; a mouthful
7. a small fragment of something broken off from the whole
8. a unit of measurement of information (from binary + digit); the amount of information in a system having two equiprobable states
9. a small quantity
10. an indefinitely short time