COGWHEELS
Scrabble letter values: C3O1G2W4H4E1E1L1S1 = 18
Definition
COGWHEELS is the plural of COGWHEEL.
noun COGWHEEL: a toothed wheel that engages another toothed mechanism in order to change the speed or direction of transmitted motion.
Synonyms of COGWHEEL: gear, gear_wheel, geared_wheel