Light dramatic piece with a happy ending (3)
I believe the answer is:
ray
'light' is the definition.
(ray is a kind of light)
'dramatic piece with a happy ending' is the wordplay.
'dramatic piece' becomes 'r' (abbreviation for Rook. I am not sure about the 'dramatic' bit.).
'with' says to put letters next to each other.
'ending' indicates one should take the final letters.
The last letter of 'happy' is 'y'.
'r'+'a'+'y'='RAY'
Can you help me to learn more?
(Other definitions for ray that I've seen before include "Flatfish or sunbeam" , "Pencil of light" , "Flat fish or sun beam" , "Beam or flatfish" , "Flash < Movie Player" .)