Definitions
1.nounA piece of metal placed in a horse's mouth and connected to the reins to direct the animal."A horse hates having a bit put in its mouth."
2.nounA rotary cutting tool fitted to a drill, used to bore holes.
3.nounA coin of a specified value."a threepenny bit"
4.nounA ten-cent piece, dime.
5.nounA unit of currency or coin in the Americas worth a fraction of a Spanish dollar; now specifically, an eighth of a US dollar."A quarter is two bits."
6.nounIn the southern and southwestern states, a small silver coin (such as the real) formerly current; commonly, one worth about 12½ cents; also, the sum of 12½ cents.
7.nounA small amount of something."There were bits of paper all over the floor. Does your leg still hurt? / Just a bit now. I've done my bit; I expect you to do yours."
8.nounSpecifically, a small amount of time."I'll be there in a bit; I need to take care of something first. He was here just a bit ago, but it looks like he's stepped out."
9.noun(plural) Fractions of a second."The 400 metres race was won in 47 seconds and bits."
10.nounA portion of something."I'd like a big bit of cake, please."
11.nounSomewhat; something, but not very great; also used like jot and whit to express the smallest degree. See also a bit."Am I bored? Not a bit of it!"
12.nounA prison sentence, especially a short one.
13.nounAn excerpt of material making up part of a show, comedy routine, etc."His bit about video games was not nearly as entertaining as the other segments of his show."
14.nounA small part or role, sometimes with spoken lines, in a theatrical performance."She acted her bit in the opening scene."
15.nounThe part of a key which enters the lock and acts upon the bolt and tumblers.
16.nounThe cutting iron of a plane.
17.nounThe bevelled front edge of an axehead along which the cutting edge runs.
18.verbTo put a bridle upon; to put the bit in the mouth of (a horse).