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A variety of lettuce having a slender head of long dark-green leaves with broad midribs. Also called cos1, cos lettuce.
[French, from feminine of Romain, Roman, from Old French, from Latin Rōmānus, from Rōma, Rome.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Plants) the usual US and Canadian name for cos1
[C20: from French, from romain Roman]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
a variety of lettuce, Lactuca sativa longifolia, having a cylindrical head of long, loose leaves.Also called romaine′ let′tuce, cos.
[1905–10; < French, feminine of romain Roman]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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