Money. The word is used in the West Indies for a half pistareen (fivepence). In Jamaica, a bit is worth sixpence, English; in America, 12 1/2 cents; in Ireland, tenpence.
⁂ In English we use the word for a coin which is a fraction of a unit. Thus, a shilling being a unit, we have a six-pennybit and threepenny bit (or not in bits but in divers pieces). So, taking a sovereign for a unit, we had seven-shilling bits, etc.