‖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 Scrophulariaceæ, natives of North America; -- called also snakehead, turtlehead, shellflower, etc. [ 1913 Webster ]
n. an order comprising the false scorpions. Syn. -- order Chelonethida, Pseudoscorpionida, order Pseudoscorpionida, Pseudoscorpiones, order Pseudoscorpiones. [ WordNet 1.5 ]