ˈ ̷ ̷ ̷ ̷ˌ ̷ ̷ noun
Etymology: turtle (II) + head; so called from the shape of the flower
: chelone ; especially : a showy perennial herb ( Chelone glabra ) of marshy lands of eastern and central No. America with waxy lanceolate to ovate leaves and flowers with the lower parts creamy white and the upper parts pale pink to deep purple