noun. primitive echinoderms having five or more feathery arms radiating from a central disk.
- sea lily
- class Crinoidea
- feather star
Example sentences of the word crinoid
1. Noun, singular or mass
The term Indian money is a misnomer, as these relics are in fact fossil remains of a sea creature known as a crinoid.
Another indication of the widespread range of the now extinct crinoids and their large numbers are the large limestone deposits in North America and Europe that are made of crinoid pieces.