Quick definitions from WordNet (star grass)
▸ noun: any plant of the genus Hypoxis having long grasslike leaves and yellow star-shaped flowers: Africa; Australia; southern Asia; North America
▸ noun: perennial Australian grass having numerous long spikes arranged like the vanes of a windmill
▸ noun: any of several perennials of the genus Aletris having grasslike leaves and bitter roots reputed to cure colic
▸ noun: trailing grass native to Europe now cosmopolitan in warm regions; used for lawns and pastures especially in southern United States and India
▸ noun: any plant of the genus Hypoxis having long grasslike leaves and yellow star-shaped flowers: Africa; Australia; southern Asia; North America
▸ noun: perennial Australian grass having numerous long spikes arranged like the vanes of a windmill
▸ noun: any of several perennials of the genus Aletris having grasslike leaves and bitter roots reputed to cure colic
▸ noun: trailing grass native to Europe now cosmopolitan in warm regions; used for lawns and pastures especially in southern United States and India