star grass n any of several perennials of the genus Aletris having grasslike leaves and bitter roots reputed to cure colic n any plant of the genus Hypoxis having long grasslike leaves and yellow star-shaped flowers: Africa; Australia; southern Asia; North America n trailing grass native to Europe now cosmopolitan in warm regions; used for lawns and pastures especially in southern United States and India n perennial Australian grass having numerous long spikes arranged like the vanes of a windmill Synonym(s) colicroot colic root crow corn unicorn root Bermuda grass devil grass Bahama grass kweek doob scutch grass Cynodon dactylon windmill grass creeping windmill grass Chloris truncata