What is the origin of farthing?
A farthing was formerly an English coin of the smallest denomination, worth a quarter of a penny. Originally the coin was made of silver, then of a copper alloy, and finally of bronze. The coin was discontinued in 1961. The Middle English name for the coin was ferthing, farthing (with still more variants), made of silver, and came from Old English fēorthing, fēorthung “a quarter, a fourth part, a farthing.” The Old English forms are derivatives of fēortha “fourth” and the noun suffix –ing “one belonging to, descended from,” sometimes used to form diminutives, as here. Farthing entered English before a.d. 1000.