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."