1.
[syn: shellflower, shell-flower, turtlehead, snakehead, snake-head, Chelone glabra]
The Collaborative International Dictionary of English v.0.48:
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]
WordNet (r) 3.0 (2006):
Chelone glabra
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]