An nonmetric unit of length, originally defined as the lengths of three "average size" barleycorns laid end-to-end, but now more rationally defined as 2.54 cm. An older definition no longer used was 1 meter = 39.37 inches, giving 2.54000508 cm/inch.

12 inches are called 1 foot.

Barleycorn, Cubit, Ell, Foot, Hand, Mil, Span