English Dictionary

sheave

/ʃiːv/

noun

A wheel having a groove in the rim for a rope to work in, and set in a block, mast, or similar; the wheel of a pulley. / A sliding scutcheon for covering a keyhole.

The pulley system uses a sheave to change the direction of the rope.

意味（1）

A wheel having a groove in the rim for a rope to work in, and set in a block, mast, or similar; the wheel of a pulley.

To an exceptional degree the duties on these inclines have been passed on from father to son; many a boy has begun his working life in oiling the sheaves and, after passing through every grade, has reached the age of retirement in the responsible position of brakesman.

意味（2）

A sliding scutcheon for covering a keyhole.