"Be patient" (4)
'be patient' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for wait that I've seen before include "Serve on tables" , "singer" , "Period of delay" , "Serve at table" , "Cool one's heels" .)
(Another definition for waitabit that I've seen is " it may catch on with passers-by".)