emery

n [U] hard metallic substance used (esp in powdered form) for polishing, smoothing and grinding 金刚砂; 刚玉粉.

emboss, embrace, embrasure, embrocation, embroider, embroidery, embroil, embryo, embryology, embryonic, emcee, emend, emendation, emerald, emerge, emergence, emergency, emergency-room, emergent, emeritus, emery-board, emery-paper, emetic, emigrant, emigrate, emigration, emigre, eminence, eminent, eminently, emir, emirate, emissary, emission, emit, emollient, emolument, emote, emotion, emotional,