The Collaborative International Dictionary
Diving beetle
Diving \Div"ing\, a. That dives or is used or diving.
Diving beetle (Zo["o]l.), any beetle of the family Dytiscid[ae], which habitually lives under water; -- called also water tiger.
Diving bell, a hollow inverted vessel, sometimes bell-shaped, in which men may descend and work under water, respiration being sustained by the compressed air at the top, by fresh air pumped in through a tube from above.
Diving dress. See Submarine armor, under Submarine.
Diving stone, a kind of jasper.
Wiktionary
diving beetle
n. Any beetle of the family ''(taxlink Dytiscidae family noshow=1)''.