Pines (5)
'pines' is the definition.
('yearn' can be a synonym of 'pine')
This is all the clue.
(Other definitions for yearns that I've seen before include "'Hankers, longs (6)'" , "Craves, longs intensely" , "'Craves, longs for (6)'" , "Longs for, pines" , "Desires strongly" .)
'pines' is the definition.
('long' can be a synonym of 'pine')
This is the entire clue.