Waited on (6)
I believe the answer is:
served
'waited on' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for served that I've seen before include "Waited upon" , "Struck opening ball in tennis game" , "In tennis, put the ball in play, or attended to customers" , "Dished up" , "Started a game of tennis" .)