To clean or clear, as of dirt, with or as if with a broom or brush: sweep a chimney. To clear away with or as if with a broom or brush: swept snow from the steps. To clear (a path or space) with or as if with a broom. To search thoroughly: The counselors swept the dormitory during the fire drill. Electronics To search for and remove (eavesdropping devices) from a place: swept the room for bugs. To touch or brush lightly, as with a trailing garment: willow branches sweeping the ground. To pass over or through a surface or medium with a continuous movement: He swept the sponge over the tile. The conductor swept her baton through the air. To clear, drive, or convey with relentless force: The flood waters swept away everything in their path. To wipe out at a single stroke. Often used with away: The incident in effect swept away all her dreams. To remove or carry off with a swift brushing motion: swept the cards off the table; swept the child into his arms. To move across or through swiftly or with great intensity: News of the lunar landing swept the country. To pass quickly across, as when searching: His gaze swept the horizon. To drag the bottom of (a body of water). To win all games in (a series) or stages of (a contest): swept the World Series. To win overwhelmingly in: The opposition party swept the election. To clean or clear a surface with or as if with a broom or brush. Electronics To search for and remove eavesdropping devices. To move swiftly with strong, steady force: The wind swept over the plain. To move swiftly in a lofty manner, as if in a trailing robe: She swept by in silence. To trail, as a long garment. To extend gracefully, especially in a long curve: The hills sweep down to the sea. To extend in a wide range: Searchlights swept across the sky. A clearing out or removal with or as if with a broom or brush. Electronics The act or an instance of searching for and removing eavesdropping devices, as in a room. A wide curving motion: a sweep of the arm.