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 annual plant (Montia perfoliata) of western North America, having small white flowers and fleshy leaves sometimes eaten in salads. Also called miner's lettuce.