GRE Word List

COG

a tooth on the rim of a wheel or gear

The meaning of the word cog is a tooth on the rim of a wheel or gear.

Random words

WordMeaning
adulterateto corrupt, debase, or make impure by the addition of a foreign or inferior substance or element
leasha line for leading or restraining an animal
regenta person who governs a kingdom in the minority, absence, or disability of the sovereign
obsidiana dark natural glass formed by the cooling of molten lava
unprecedentedhaving no precedent : novel
charmthe chanting or reciting of a magic spell : incantation
haphazardmarked by lack of plan, order, or direction
liabilitythe quality or state of being liable
excoriateto wear off the skin of : abrade
slovenlyuntidy especially in personal appearance