sprag

Etymology 2
See.

Noun

 * 1) A billet of wood; a piece of timber, a similar solid object or constructed unit used as a prop.
 * 2) * 1956, United States Department of the Army, United States Department of the Air Force, Principles of Automotive Vehicles, Technical Manual 9-8000, page 325,
 * A sprag (fig. 349) is a steel block so shaped as to act as a wedge in the complete assembly. In the sprag unit under discussion, there are 42 sprags assembled into an outer race and held in place by two energizing springs (fig. 350).
 * 1) * 1981, (US) Departments of the Army and Air Force, Maintenance: Direct Support, and General Support Level, Technical Manual 9-2520-246-34-1, page 2-201,
 * When checking sprags, anvil and spindle ends of micrometer and flat back of sprag must all rest on a flat surface as shown in view A.
 * Since wear on all sprags in any one sprag unit will be the same, it is only necessary to check 5 sprags in each assembly.

Verb

 * 1)  To check the motion of, as a carriage on a steep slope, by putting a sprag between the spokes of the wheel.
 * 2)  To prop or sustain with a sprag.
 * 1)  To prop or sustain with a sprag.

Etymology 3
Compare 🇨🇬?

Noun

 * 1) A young salmon.