use up all one's strength and energy and stop working; "At the end of the march, I pooped out"
deplete; "exhaust one's savings"; "We quickly played out our strength"
having the spring unwound; "a run-down watch"
pursue until captured; "They ran down the fugitive"
injure or kill by running over, as with a vehicle
examine hastily; "She scanned the newspaper headlines while waiting for the taxi"