SUPINE, in Latin grammar, part of the conjugation of a verb, being a verbal substantive of the singular number, and the fourth declension.
There are two kinds of supines. One, called the first supine, ending in um of the accusative case, is always of an active signification, and marks a motion; as, abijt deambulatum. The other, called the last supine, and ending in u of the ablative case, is of a passive signification, and is governed by substantives or adjectives; as, facile dissu, &c.