Titillate (6)
I believe the answer is:
tickle
'titillate' is the definition.
(I know that titillate can be written as tickle)
This is all the clue.
(Other definitions for tickle that I've seen before include "Amuse, divert" , "Catch (trout) by rubbing" , "Make to laugh with finger movement" , "Excite with fingertips" , "Stroke lightly to make laugh" .)