Thou

• POS: Noun, Pronoun

CIDE DICTIONARY

Thou, pron. [OE. thou, , AS. , ; akin to OS. & OFries. thu, G., Dan. & Sw. du, Icel. , Goth. , Russ. tui, Ir. & Gael. tu, W. ti, L. tu, Gr. sy`, Dor. ty`, Skr. tvam. √185. Cf. Thee, Thine, Te Deum.].

 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.  [1913 Webster]
" “In Old English, generally, thou is the language of a lord to a servant, of an equal to an equal, and expresses also companionship, love, permission, defiance, scorn, threatening: whilst ye is the language of a servant to a lord, and of compliment, and further expresses honor, submission, or entreaty.”"  Skeat.  [1913 Webster]
" Thou is now sometimes used by the Friends, or Quakers, in familiar discourse, though most of them corruptly say thee instead of thou."  [1913 Webster]
"Art thou he that should come?"  [1913 Webster]

Thou, v. t. 

 To address as thou, esp. to do so in order to treat with insolent familiarity or contempt.  [1913 Webster]
"If thou thouest him some thrice, it shall not be amiss."  [1913 Webster]

Thou, v. i. 

 To use the words thou and thee in discourse after the manner of the Friends.  [1913 Webster]