adj ·see sprack, ·adj.
2. sprag ·noun a young salmon.
3. sprag ·vt to prop or sustain with a sprag.
4. sprag ·noun a billet of wood; a piece of timber used as a prop.
5. sprag ·vt to check the motion of, as a carriage on a steep grade, by putting a sprag between the spokes of the wheel.