Phrase guide

billion-dollar grass

noun · 2 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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No pronunciation record was provided for this word.

1

noun

Meaning 1

Any of the genus Echinochloa of barnyard grass, widely considered harmful weeds.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

coarse annual grass cultivated in Japan and southeastern Asia for its edible seeds and for forage; important wildlife food in United States

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: Japanese millet, Japanese barnyard millet, sanwa millet, Echinochloa frumentacea

Antonyms: none provided

Broader terms: millet

History

Etymology

Probably so-called because of the adverse impact of Echinochloa weeds on yields rice and other crops.