(n)terrestrial burrowing nocturnal frog of grassy terrain and scrub forests having very hard upper surface of head; of the United States southwest, Syn.Pternohyla fodiens, northern casque-headed frog
The Collaborative International Dictionary of English (GCIDE) v.0.53Collaborative International Dictionary (GCIDE)
n. [ F. casque, fr. Sp. casco See Cask. ] A piece of defensive or ornamental armor (with or without a vizor) for the head and neck; a helmet. [ 1913 Webster ]
His casque overshadowed with brilliant plumes. Prescott. [ 1913 Webster ]