Dual

Dual, in Grammar, is the form given in some languages to a noun or a verb, when only two things are spoken of. Thus, in Greek, pater is 'father;' pateres, 'two fathers;' pateres, 'fathers.' Sanskrit, ancient Greek, Arabic, and Hebrew have the dual number, the last only in nouns. Modern Greek has lost the dual. The only trace of it in Latin is in the two words duo, 'two,' and ambo, 'both.' It is wanting in the Teutonic languages, with the exception of the ancient Gothic, which had a dual form of the verb. In Anglo-Saxon there was a separate form of pronoun for 'we two' (wit) and 'ye two' (git).