Quillwort definition
Any of several vascular, spore-bearing, aquatic or marsh plants of the genus Isoetes, having quill-like leaves.
noun
Any of an order (Isoetales) of lycopods with short, fleshy stems and tufts of long, hollow, quill-like leaves whose bases contain spore cases.
noun
Other Word Forms
Noun
Singular:
quillwort
Plural:
quillworts