Source : WordNet®

lock up
     v 1: secure by locking; "lock up the house before you go on
          vacation"
     2: place in a place where something cannot be removed or
        someone cannot escape; "The parents locked her daughter up
        for the weekend"; "She locked her jewels in the safe"
        [syn: {lock in}, {lock away}, {lock}, {put away}, {shut up},
         {shut away}]