Misled, concealing some land (4)
I believe the answer is:
isle
'land' is the definition.
(isle is a kind of land)
'misled concealing some' is the wordplay.
'some' says the answer is hidden in the clue.
'ISLE' can be found hidden inside 'misled concealing'.
(Other definitions for isle that I've seen before include "Land amid water" , "it's offshore" , "Small mass of land in the sea" , "See 11 Across" , "Land cut off by water" .)