"ancient tool for scraping the skin after a bath," 1580s, from Latin strigilis "scraper, horse-comb," from stringere (1) "draw along a surface, graze, touch lightly; strip off, pluck off, cut away; clip, prune; lay bare, unsheathe," figuratively "waste, consume, reduce; touch, move, affect, cause pain," from PIE root *streig- "to stroke, rub, press" (cognates: Latin striga "stroke, strike, furrow," stria "furrow, channel;" Old Church Slavonic striga "shear;" Old English stracian "to stroke;" German streichen "to stroke, rub"). Etymologists dispute over whether this is connected to Latin stringere (2), root of strain (v.).