Sunny little chap? (3)
'chap' is the definition.
'sunny little' is the wordplay.
'sunny' becomes 'so' (I am not sure about this - if you are sure you should believe this answer much more).
'little' becomes 'L' (abbreviation for little).
'so'+'l'='SOL'
Can you help me to learn more?
(Other definitions for sol that I've seen before include "Note; Peruvian currency" , "Fifth note of scale" , "The sun in Spain" , "A Latin sun" , "The sun in 12 Across" .)
But I've got no explanation for this one! Could you help me understand?
(Other definitions for ray that I've seen before include "Beam of light or flat fish" , "Flash < Movie Player" , "may be electric" , "Column of light on the fish?" , "Beam; man's name" .)