Key aide let exclusive houses (6)
I believe the answer is:
delete
'key' is the definition.
(key on a computer keyboard)
'aide let exclusive houses' is the wordplay.
'houses' indicates the answer is hidden within the clue (part of the clue houses the answer).
'DELETE' is hidden within 'aide let exclusive'.
(Other definitions for delete that I've seen before include "Edit out" , "Remove or erase (text)" , "Remove, cross out" , "Key" , "Get rid of" .)