- The definition of a cog is any of the teeth on a wheel or gear that fits into an opposite notch to cause motion of the wheel, or a person who is important but not critical in the structure of an organization.
An example of a cog is the points on a bike gear that fit into the bike chain in order to move the bike forward.
The cogs of three wheels fitted together.
cog definition by Webster's New World
- any of a series of teeth on the rim of a wheel, for transmitting or receiving motion by fitting between the teeth of another wheel; gear tooth
- a cogwheel
- ☆ a person or thing regarded as a minor but necessary part of the structure of an activity or organization
Origin: Middle English cog, cogge ; from uncertain or unknown; perhaps Scandinavian as in Norwegian kug, Swedish kugge, a cog, tooth ; from Indo-European an unverified form gugā a hump, ball ; from base an unverified form gēu-, to bend, arch from source Old English cycgel, cudgel
- cogged adjective
Origin: altered (infl. by cog) ; from earlier cock, to secure, probably ultimately ; from Italian cocca, a notch
Origin: probably slang extension of cog
cog definition by American Heritage Dictionary
- One of a series of teeth, as on the rim of a wheel or gear, whose engagement transmits successive motive force to a corresponding wheel or gear.
- A cogwheel.
- A subordinate member of an organization who performs necessary but usually minor or routine functions.
Origin: Middle English cogge, probably of Scandinavian origin; akin to Swedish kugg, kugge.
- cogged cogged adjective
verb cogged cogged, cog·ging, cogs verb, transitive
Origin: Origin unknown.
Origin: Alteration (influenced by cog1) of cock, to join with tenons.