Source : WordNet®

come on
     v 1: appear or become visible; make a showing; "She turned up at
          the funeral"; "I hope the list key is going to surface
          again" [syn: {come out}, {turn up}, {surface}, {show up}]
     2: move towards; "We were approaching our destination"; "They
        are drawing near"; "The enemy army came nearer and nearer"
        [syn: {approach}, {near}, {go up}, {draw near}, {draw
        close}, {come near}]
     3: develop in a positive way; "He progressed well in school";
        "My plants are coming along"; "Plans are shaping up" [syn:
         {progress}, {come along}, {advance}, {get on}, {get along},
         {shape up}] [ant: {regress}]
     4: start running, functioning, or operating; "the lights went
        on"; "the computer came up" [syn: {go on}, {come up}]
        [ant: {go off}]
     5: become available; "water or electricity came on again after
        the earthquake"