Majuscule \Ma*jus"cule\, n. [Cf. F. majuscule. See Majuscul[ae].]

A capital letter; especially, one used in ancient manuscripts. See Majuscul[ae].

Majuscule writing, writing composed wholly of capital letters, especially the style which prevailed in Europe from the third to the sixth century.

Source: Webster's Revised Unabridged Dictionary (1913)