[kog, kawg] 
noun, verb, cogged, cog⋅ging.| 1. | (not in technical use) a gear tooth, formerly esp. one of hardwood or metal, fitted into a slot in a gearwheel of less durable material. |
| 2. | a cogwheel. |
| 3. | a person who plays a minor part in a large organization, activity, etc.: He's just a small cog in the financial department. |
| 4. | (of an electric motor) to move jerkily. |
| 5. | to roll or hammer (an ingot) into a bloom or slab. |
| 6. | slip a cog, to make a blunder; err: One of the clerks must have slipped a cog. |
[kog, kawg] verb, cogged, cog⋅ging.| 1. | to manipulate or load (dice) unfairly. |
| 2. | to cheat, esp. at dice. |
[kog, kawg] noun, verb, cogged, cog⋅ging.| 1. | Carpentry. (in a cogged joint) the tongue in one timber, fitting into a corresponding slot in another. |
| 2. | Mining. a cluster of timber supports for a roof. Compare chock (def. 4). |
| 3. | Carpentry. to join with a cog. |
| cog 1 (kŏg, kôg) n.
[Middle English cogge, probably of Scandinavian origin; akin to Swedish kugg, kugge.] cogged adj. |
| cog 2 (kŏg, kôg) v. cogged, cog·ging, cogs v. tr. To load or manipulate (dice) fraudulently. v. intr. To cheat, especially at dice. n. An instance of cheating; a swindle. [Origin unknown.] |
| cog 3 (kŏg, kôg) n. A tenon projecting from a wooden beam designed to fit into an opening in another beam to form a joint. tr.v. cogged, cog·ging, cogs To join with tenons. [Alteration (influenced by cog1) of cock, to join with tenons.] |
