coconut sound

co·co·nut sound

a sound like that produced when a cracked coconut is tapped; it is elicited by percussing the skull of a patient with osteitis deformans.
References in periodicals archive ?
The very satisfying coconut sound was followed by a gasp from the crowd.
There is a planned reunion with The Coconuts in summer 2002, the band which Creole says will always be influenced by what he calls "The greats; Duke Ellington, Cab Calloway and Frank Sinatra, their influence gave us our Coconut sound.