'Sprag' definitions:

Definition of 'sprag'

noun

A chock or bar wedged under a wheel or between the spokes to prevent a vehicle from rolling down an incline

noun

A wooden prop used to support the roof of a mine [syn: pitprop, sprag]

From: GCIDE

Sprag \Sprag\ (spr[a^]g), n. [Cf. Icel. spraka a small flounder.] (Zool.) A young salmon. [Prov. Eng.] [1913 Webster]

From: GCIDE

Sprag \Sprag\, n. [See Spray a branch.] A billet of wood; a piece of timber used as a prop. [1913 Webster]

From: GCIDE

Sprag \Sprag\, v. t. [imp. & p. p. Spragged (spr[a^]gd); p. pr. & vb. n. Spragging (-g[i^]ng).]
1. To check the motion of, as a carriage on a steep grade, by putting a sprag between the spokes of the wheel. --R. S. Poole. [1913 Webster]
2. To prop or sustain with a sprag. [1913 Webster]

From: GCIDE