Fruit basket (4)
'fruit basket' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for punnet that I've seen before include "Shallow fruit basket" , "Source of fruit" , "Small basket for berries" , "Small basket for 13 Across (6)" , "Little box (of strawberries?)" .)
(Other definitions for trug that I've seen before include "Fruit-basket" , "Shallow wooden basket for gardeners" , "Small boat" , "Shallow oblong wooden basket" , "Basket to use in 17" .)