Source : WordNet®

run down
     v 1: trace; "We are running down a few tips" [syn: {check out}]
     2: move downward; "The water ran down"
     3: injure or kill by running over, as with a vehicle [syn: {run
        over}]
     4: use up all one's strength and energy and stop working; "At
        the end of the march, I pooped out" [syn: {poop out}, {peter
        out}, {run out}, {conk out}]
     5: examine hastily; "She scanned the newspaper headlines while
        waiting for the taxi" [syn: {scan}, {skim}, {rake}, {glance
        over}]
     6: deplete; "exhaust one's savings"; "We quickly played out our
        strength" [syn: {exhaust}, {play out}, {sap}, {tire}]
     7: pursue until captured; "They ran down the fugitive"