As subject of a verb or occas. an implied verb: thou, you: (a) used for an offspring, a disciple, subject, one who is of a lower social rank or in a disadvantageous position, etc.; also in apposition to thou as subject [quot. a1382]; (b) used for a parent, master, lord, king, one who is in a position of power or authority, etc.; also in apposition to the subject [quot. ?a1300]; (c) used for God, Christ, Mary, a pagan deity, etc.; the which ~, you who; (d) used for a spouse, lover, colleague, an opponent, one who is equal in status, etc.; (e) used for someone as the subject of reproach, scorn, threat, challenge, etc.; (f) used for a bird, an object, a place, an abstraction, a personification, etc.; (g) used indefinitely in addressing the reader or an imaginary audience in narratives, instructions, discourses, etc.: thou, you.

As vocative with following name, noun, or noun phrase in apposition or occas. with following rel. clause: thou, you: (a) used for an offspring, a subject, subordinate, etc.; also without noun in apposition [quot. a1438]; (b) used for a king, parent, or one who is in a position of power; also, used for God, Christ, or a pagan deity; (c) used for a friend or companion, one who is the object of the speaker's respect, concern, etc.; (d) used for someone to whom reproach, scorn, contempt, etc. is directed; (e) used for a bird, an object, a personification, etc.; (f) used indefinitely in addressing a reader.

The word 'thou'.