cams is a form of:

Cam



noun
1.
(a projecting, irregularly shaped disk or cylinder that imparts, a rocking motion to any contiguous part on a wheel or piece) ឧបករណ៍ដែលធ្វើឱ្យចលនានិយតទៅជាចលនាអនិយត
ENGLISH MEANING
noun
1.
A turning or sliding piece which, by the shape of its periphery or face, or a groove in its surface, imparts variable or intermittent motion to, or receives such motion from, a rod, lever, or block brought into sliding or rolling contact with it.
2.
A curved wedge, movable about an axis, used for forcing or clamping two pieces together.
3.
A projecting part of a wheel or other moving piece so shaped as to give alternate or variable motion to another piece against which it acts.
4.
A ridge or mound of earth.
1.
Crooked