A word of gratitude to a film star (6)
I believe the answer is:
thanks
'a word of gratitude' is the definition.
(I've seen this before)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for thanks that I've seen before include "I appreciate that" , "Brief expression of appreciation" , "Word of gratitude" , "Much obliged!" , "Cheers" .)