water gillyflower is a noun meaning "a featherfoil of the eastern United States with submerged spongy inflated flower stalks and white flowers". It carries one recorded sense.
a featherfoil of the eastern United States with submerged spongy inflated flower stalks and white flowers
Definitions, synonyms and semantic relations for water gillyflower come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.