Masterwort \Mas"ter*wort`\, n. (Bot.) (a) A tall and coarse European umbelliferous plant ({Peucedanum Ostruthium}, formerly {Imperatoria}). (b) The {Astrantia major}, a European umbelliferous plant with a showy colored involucre. (c) Improperly, the cow parsnip ({Heracleum lanatum}).
masterwort n : any plant of the genus Astrantia [syn: {astrantia}]