Used as a modifier before a noun, pronoun_ Of thee, or belonging to thee; the more common form of thine, possessive case of thou; -- used always attributively, and chiefly in the solemn or grave style, and in poetry. Thine is used in the predicate. See thine, archaic That belongs to thee; the possessive form of thou, archaic or literary your (informal); that belongs to you (singular), conjunction_ obsolete because