keyhole urchin
noun
Any of various sand dollars having one or more elongated perforations in the test and belonging to the family Mellitidae or related families; especially one of the genus Mellita of the Atlantic coasts of America.
Origin
Mid 19th century.
- painstakingly
- painstakingness
- painsworthy
- paint
- paintability
- paintable
- paint a picture of
- paintball
- paintballer
- paintballing
- paintbox
- paint-bridge
- paintbrush
- paint-burner
- paint-by-numbers
- paint card
- paint chip
- painted bat
- painted beauty
- Painted Chamber
- painted cloth
- Painted Desert
- painted duck
- painted finch
- painted goose