COGWHEEL


Meaning of COGWHEEL in English

/ ˈkɒgwiːl; NAmE ˈkɑːg-/ (also cog ) noun

a wheel with a series of teeth on the edge that fit between the teeth on the next wheel and cause it to move

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.