1
- a wheel or bar with a series of projections on its edge, which transfers motion by engaging with projections on another wheel or bar齿轮; 嵌齿轮：
figurative 〈喻〉she was only a very small cog in a big machine.
她只是大型机器上的一颗小小螺丝钉, 一个小人物罢了。
1.1
- each of such a series of projections（齿轮上的）轮齿, 嵌齿。
派生词
cogged
adjective词源
Middle English: probably of Scandinavian origin and related to Swedish kugge and Norwegian kug.
- a broadly built medieval ship with a rounded prow and stern（船身宽、船首和船尾圆的）中世纪海船。
词源
Middle English: related to Middle Dutch kogge, Old French cogue.