Begin lilt al fresco (4-3)
I believe the answer is:
open-air
'al fresco' is the definition.
Although both the answer and definition are singular nouns, I don't understand how one could define the other.
'begin lilt' is the wordplay.
'begin' becomes 'open' (both can mean to start).
'lilt' becomes 'air' (I've seen this in another clue).
'open'+'air'='OPEN-AIR'
Can you help me to learn more?
(Other definitions for open-air that I've seen before include "Taking place outdoors" , "not below roof" , "outside" , "Outdoor" , "Exposed to the elements" .)