Reddish; glowing (5)
I believe the answer is:
ruddy
I believe this is a double definition.
'reddish' is the first definition.
(I know that reddish can be written as ruddy)
'glowing' is the second definition.
(thesaurus)
(Other definitions for ruddy that I've seen before include "Having a healthy red complexion" , "healthy-looking" , "Red in the face (like a duck?)" , "Reddish; -- duck" , "Rubicund" .)