On - Definition

adv 1: with a forward motion; "we drove along admiring the
view"; "the horse trotted along at a steady pace"; "the
circus traveled on to the next city"; "move along";
"march on" [syn: along, on]
2: indicates continuity or persistence or concentration; "his
spirit lives on"; "shall I read on?"
3: in a state required for something to function or be
effective; "turn the lights on"; "get a load on"
adj 1: in operation or operational; "left the oven on"; "the
switch is in the on position" [ant: off]
2: (of events) planned or scheduled; "the picnic is on, rain or
shine"; "we have nothing on for Friday night" [ant:
cancelled, off]