(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.

(idiomatic) considerably

(computing, less common) Synonym of bit rot

(computing) The putative tendency of content in storage to become corrupt over time.

(computing) A bitwise operation in which the bits in a value are shifted left or right.

(plural only, informal) Female genitalia.

(computing, of a word size, or an integer) Represented using units of 8 bits (1 byte) / (computer graphics, music) Originating from or resembling the art or music of the 8-bit computer era.

Alternative spelling of bitplane

piece of horse tack that lifts (raises) a bit in the horse's mouth