What is the origin of 'sleep tight'?
Read moreOne of the mysteries of the English language finally explained.
A rhizocephalan cirripede of the genus Peltogaster, parasitic on hermit crabs; (in form Peltogaster) the genus itself.
Late 19th century; earliest use found in American Naturalist. From scientific Latin Peltogaster, genus name from ancient Greek πέλτη + scientific Latin -o- + ancient Greek γαστήρ stomach.