Source : WordNet®

drive out
     v 1: force to go away; used both with concrete and metaphoric
          meanings; "Drive away potential burglars"; "drive away
          bad thoughts"; "dispel doubts"; "The supermarket had to
          turn back many disappointed customers" [syn: {chase away},
           {turn back}, {drive away}, {dispel}, {drive off}, {run
          off}]
     2: force or drive out; "The police routed them out of bed at 2
        A.M." [syn: {rout out}, {force out}, {rouse}]
     3: clear out the chest and lungs; "This drug expectorates
        quickly" [syn: {expectorate}, {clear out}]