noun, masculine/feminine/ɔʁ.ʒ(ə) de ʁa/plural: orges des rats
orge des rats is masculine or feminine depending on context in French.
wall barley (Hordeum murinum)
Synonyms: orge des lièvres, orge des souris, orge queue-de-rat, orge queue-de-souris, orge sauvage