gearwheel

n toothed wheel in a set of gears 齿轮.

gaze, gaze at, gazebo, gazelle, gazer, gazette, gazetteer, gazump, gazumper, gazumping, GB, GC, GCE, GCSE, Gdn, GDP, GDR, gear, gear-change, gearbox, gecko, gee, gee-gee, geese, geezer, Geiger counter, geisha, gel, gelatine, gelatinous, geld, gelding, gelignite, gem, Geminean, Gemini, gemstone, gen, gendarme, gendarmerie,