(historical) A former (pre-decimalisation) British coin worth three old pennies. / (Cockney rhyming slang) A woman's breast; a tit.

(idiomatic, of a horse) Evading the bit.

plural of bit part

present participle of chomp at the bit

(US, slang) Twenty-five cents, or a quarter.

plural of sticky bit

(telecommunications, computing) The time required to send one signal bit.

(US, informal) costing 25 cents / (US, idiomatic, slang) insignificant or worthless

(computing) The bit in the representation of a number indicating whether it is negative or positive; applicable to both twos complement and signed magnitude representations.

(acting) A minor role, generally not assigned a name.