Lettuce type (4)
'lettuce type' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for cos that I've seen before include "Lettuce with long crisp leaves" , "leaves > function" , "Chief of Staff" , "Greek island and type of lettuce" , "Salad ingredient" .)
'lettuce type' is the definition.
(I've seen this in another clue)
This is all the clue.