Definition of water grass in English:

water grass

noun

  • 1Any of various grasses or grass-like plants growing in or near water or in moist ground, as grasses of the genera Glyceria, Echinochloa, and Paspalum, velvet grass (Holcus lanatus), and various sedges (Cyperaceae) and (British regional) horsetails (Equisetum).

  • 2Chiefly Irish English. Watercress, Nasturtium officinale.

Origin

Late 16th century; earliest use found in John Higgins (b. c1544), poet and linguist. From water + grass.

Pronunciation

water grass

/ˈwɔːtə ˌɡrɑːs//ˈwɔːtə ˌɡras/