Etymology: (bef. 900; ME; OE thū, c. OFris, OS, ON thū, OHG t(h)u, Go thu, OIr tú, L tū, Doric Gk tý)
Definition of 'thou'
Princeton's WordNet
1. (noun)thousand, one thousand, 1000, M, K, chiliad, G, grand, thou, yard the cardinalnumber that is the product of 10 and 100
Definition of 'thou'
Webster Dictionary
1. thou the secondpersonal pronoun, in the singular number, denoting the person addressed; thyself; the pronoun which is used in addressing persons in the solemn or poetical style
Sense: an old word for `you' used only when addressing one person, especially God (usuallyThou), as the subject of a verb Thou, O God .; Thou shalt not kill!