snake-head n 1: showy perennial of marshlands of eastern and central North America having waxy lanceolate leaves and flower with lower part creamy white and upper parts pale pink to deep purple [syn: {shellflower}, {shell-flower}, {turtlehead}, {snakehead}, {snake-head}, {Chelone glabra}]
Snakehead \Snake"head`\, n. 1. A loose, bent-up end of one of the strap rails, or flat rails, formerly used on American railroads. It was sometimes so bent by the passage of a train as to slip over a wheel and pierce the bottom of a car. [1913 Webster] 2. (Bot.) (a) The turtlehead. (b) The Guinea-hen flower. See {Snake's-head}, and under {Guinea}. [1913 Webster]
Turtlehead \Tur"tle*head`\ (t[^u]r"t'l-h[e^]d`), n. (Bot.) An American perennial herb ({Chelone glabra}) having white flowers shaped like the head of a turtle. Called also {snakehead}, {shell flower}, and {balmony}. [1913 Webster]
Chelone \Che*lo"ne\, n. [Gr. chelw`nh a tortoise. So named from shape of the upper lip of the corolla.] (Bot.) A genus of hardy perennial flowering plants, of the order {Scrophulariace[ae]}, natives of North America; -- called also {snakehead}, {turtlehead}, {shellflower}, etc. [1913 Webster]