A common edible North American clam (Mya arenaria) having a thin, elongated shell, found especially along the Atlantic coast. Also called soft clam, steamer.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.