warnv. t.[OE. wernen, AS. weornan, wyrnan. Cf. Warn to admonish.] To refuse.(Chaucer.)v. t.[OE. warnen, warnien, AS. warnian, wearnian, to take heed, to warn; akin to AS. wearn denial, refusal, OS. warning, wernian, to refuse, OHG. warnen, G. warnen to warn, OFries. warna, werna, Icel. varna to refuse; and probably to E. wary. .]()1. To make ware or aware; to give previous information to; to give notice to; to notify; to admonish; hence, to notify or summon by authority; as, to warn a town meeting; to warn a tenant to quit a house.(Dryden.)Cornelius the centurion . . . was warned from God by an holy angel to send for thee. (Acts x. 22.)Who is it that hath warned us to the walls? (Shak.)2. To give notice to, of approaching or probable danger or evil; to caution against anything that may prove injurious.(Dryden.)3. To ward off.(Spenser.)