nounThe American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
An orchid (Arethusa bulbosa) of northeast North America having a solitary, usually rose-colored flower with a purple-spotted, yellow-crested lip. Also called arethusa, dragon's mouth.