Unlocked (4)
'unlocked' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for opened that I've seen before include "Started to write in dictionary" , "Unfastened or removed a barrier" , "Undone, begun" , "Exposed to view" , "Unfastened or moved a barrier" .)
'unlocked' is the definition.
(having no locks of hair)
This is the entire clue.
(Other definitions for bald that I've seen before include "With no effort to conceal" , "Exposed" , "Follicly challenged?" , "Lacking hair on the scalp" , "Without the natural covering" .)