vi to use the words thou and thee in discourse after the manner of the friends.
2. thou ·vt to address as thou, ·esp. to do so in order to treat with insolent familiarity or contempt.
3. thou (·obj) the second personal pronoun, in the singular number, denoting the person addressed; thyself; the pronoun which is used in addressing persons in the solemn or poetical style.