Uncovered wild bear (4)
I believe the answer is:
bare
'uncovered' is the definition.
(similar in meaning)
'wild bear' is the wordplay.
'wild' indicates anagramming the letters.
'bear' anagrammed gives 'BARE'.
(Other definitions for bare that I've seen before include "Not clothed" , "Expose" , "Without protective covering" , "Nude; uncover" , "Mere" .)