Laze in the tub (4)
I believe the answer is:
soak
'laze in the tub' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for soak that I've seen before include "Immerse in liquid" , "Steep in water" , "Make extremely wet" , "Saturate" , "Douse, drench" .)