on

Pronunciation:  US [ɔn] UK [ɒn]
  • prep.Right under;
  • adv.On duty; sustainability; forward (move), to put on
  • adj.;; Activity; open
  • n."Board" (of playing) left
  • WebOpen (open), in the ... ... , And connect
apropos apropos of as far as as for as regards as respects as to concerning of about regarding respecting touching toward towards
adv.
5.
12.
in or into a bus, train, airplane, etc. 
17.
if someone is on a team, committee, etc, they are a member of it 
na.
1.