Definition of "Bit" :

noun: the cutting part of a drill; usually pointed and threaded and is replaceable in a brace or bitstock or drill press

"He looked around for the right size bit."

noun: piece of metal held in horse's mouth by reins and used to control the horse while riding

"The horse was not accustomed to a bit."

noun: the part of a key that enters a lock and lifts the tumblers

noun: a short performance that is part of a longer program

noun: a small fragment

noun: an instance of some kind

"He had a bit of good luck."

noun: a small amount of solid food; a mouthful

"All they had left was a bit of bread."

noun: a small fragment of something broken off from the whole

"A bit of rock caught him in the eye."

noun: a unit of measurement of information (from binary + digit); the amount of information in a system having two equiprobable states

"There are 8 bits in a byte."

noun: a small piece or quantity of something

"A bit of paper."

noun: an indefinitely short time

"In just a bit."