擦 - grate, rub, scratch

to rub; to scrub; to scrape

to rub; to chafe; to strike (match); to file; to frost (glass)

scratch; graze; scrape; abrasion

friction

grazing; skimming; almost touching; passing within inches; being within a whisker; shaving close

sliding friction

frictional unemployment

friction clutch

coefficient of friction

sibilant; sibilant consonant

fire alarm ringing continuously to warn that a fire is extremely near

bowed stringed instrument