First name in animation (4)
I believe the answer is:
walt
'first name in animation' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for walt that I've seen before include "-- Whitman, US poet" , "- Disney, cartoonist" , "... Disney (film-maker)" , "-- Whitman; -- Disney" , "Mr Disney" .)