to rub together and produce a grating or scraping sound

to use physical force to rotate a handle or crank in order to activate a piece of machinery

to dance with rhythmic and repetitive movements that are suggestive in nature

to make persistent and intense effort towards a goal

to wear down or shape something through repetitive friction or abrasion

created by grinding

hard monotonous routine work

the grade of particle fineness to which a substance is ground

an insignificant student who is ridiculed as being affected or boringly studious