Warning \Warn"ing\, a. Giving previous notice; cautioning; admonishing; as, a warning voice.

That warning timepiece never ceased. --Longfellow.

Warning piece, Warning wheel (Horol.), a piece or wheel which produces a sound shortly before the clock strikes.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Warning \Warn"ing\, n.

1. Previous notice. ``At a month's warning.'' --Dryden.

A great journey to take upon so short a warning. --L'Estrange.

2. Caution against danger, or against faults or evil practices which incur danger; admonition; monition.

Could warning make the world more just or wise. --Dryden.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Warn \Warn\, v. t. [imp. & p. p. Warned; p. pr. & vb. n. Warning.]

[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. ``Warned of the ensuing fight.'' --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. ``Juturna warns the Daunian chief of Lausus' danger, urging swift relief.'' --Dryden.

3. To ward off. [Obs.]

--Spenser.

Source: Webster's Revised Unabridged Dictionary (1913)