(1):

(imp., p. p., or auxiliary) To be bound in duty or by moral obligation.

(2):

(imp., p. p., or auxiliary) Owned; possessed.

(3):

(imp., p. p., or auxiliary) Was or were under obligation to pay; owed.

(4):

(n. & adv.) See Aught.

(5):

(imp., p. p., or auxiliary) To be necessary, fit, becoming, or expedient; to behoove; - in this sense formerly sometimes used impersonally or without a subject expressed.

(6):

of Owe