■ noun
1》 a wedge or block placed against a wheel or rounded object to prevent it from moving or to support it.
2》 a ring with a gap at the top, through which a rope or line is run.
■ verb support or make fast with a ~.
Origin
ME: prob. from Old North. Fr. var. of OFr. çouche , çoche 'block, log', of unknown ult. origin.