Wet bar? (4)
I believe the answer is:
'wet bar?' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for soap that I've seen before include "TV entertainment" , "It has detergent properties" , "Cleaning substance - melodramatic TV or radio series" , "Cleaner - long-running TV show" , "cake?" .)