Early riser? (3)
'early riser' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for lark that I've seen before include "Soaring bird" , "High-flying singer - frolic" , "in-flight performer" , "Bit of fun - early-rising bird?" , "Early riser" .)
'early riser' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for sun that I've seen before include "Fireball 93,000,000 miles away" , "Get a tan" , "Centre of Earth's orbit" , "Shiny" , "Helios, in Greek myth" .)