(figurative) a course of action that is unproductive and offers no hope of improvement; "all the clues led the police into blind alleys"; "so far every road that we've been down has turned out to be a blind alley"
win an overwhelming victory in or on; "Her new show dog swept all championships"
sweep with a broom or as if with a broom; "Sweep the crumbs off the table"; "Sweep under the bed"
clean by sweeping; "Please sweep the floor"
move with sweeping, effortless, gliding motions; "The diva swept into the room"; "Shreds of paper sailed through the air"; "The searchlights swept across the sky"