Bathtub stopper (4)

I believe the answer is:
plug
(Other definitions for plug that I've seen before include "Piece of tobacco; block" , "Power point" , "Bath or sink stopper" , "It fits into electric socket" , "Piece of publicity" .)
I believe the answer is:
plug
(Other definitions for plug that I've seen before include "Piece of tobacco; block" , "Power point" , "Bath or sink stopper" , "It fits into electric socket" , "Piece of publicity" .)