Source : Webster's Revised Unabridged Dictionary (1913)
Turtlehead \Tur"tle*head`\, 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}.
Source : WordNet®
turtlehead
n : 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}, {snakehead},
{snake-head}, {Chelone glabra}]