aqualung
1 synonym for aqualung, grouped by meaning and by how common each one is.
Noun — A piece of equipment consisting of an oxygen tank and breathing apparatus used by divers to allow them to breathe underwater.
Etymology
Aqualung was the original name for the first open-circuit SCUBA diving equipment by Emile Gagnan and Jacques Cousteau in 1943. From aqua- + lung.
Full origin of aqualung →