Bugle serenade (4)
I believe the answer is:
taps
(Other definitions for taps that I've seen before include "Knocks lightly on the faucets" , "Exploits" , "Uses listening devices" , "Bugs (wire)" , "Flow controllers" .)
I believe the answer is:
taps
(Other definitions for taps that I've seen before include "Knocks lightly on the faucets" , "Exploits" , "Uses listening devices" , "Bugs (wire)" , "Flow controllers" .)