The Collaborative International Dictionary
Malacoderm
Malacoderm \Mal"a*co*derm\, n. [Gr. malako`s soft + ? skin.] (Zo["o]l.) One of a tribe of beetles ( Malacodermata), with a soft and flexible body, as the fireflies.
Wiktionary
malacoderm
n. (context zoology English) One of a tribe of beetles (''Malacodermata''), with a soft and flexible body.