grate, grind -- (make a grating or grinding sound by rubbing together; "grate one's teeth in anger")
labor, labour, toil, fag, travail, grind, drudge, dig, moil -- (work hard; "She was digging away at her math homework"; "Lexicographers drudge all day long")
grind -- (dance by rotating the pelvis in an erotically suggestive way, often while in contact with one's partner such that the dancers' legs are interlaced)
grind, mash, crunch, bray, comminute -- (reduce to small pieces or particles by pounding or abrading; "grind the spices in a mortar"; "mash the garlic")
grind -- (created by grinding; "grind designs into the glass bowl")
grind -- (shape or form by grinding; "grind lenses for glasses and cameras")