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romaine

American  
[roh-mayn, ruh-] / roʊˈmeɪn, rə- /

noun

  1. Also called cos, cos lettuce, romaine lettuce. a variety of lettuce, Lactuca sativa longifolia, having a cylindrical head of long, relatively loose leaves.


romaine British  
/ rəʊˈmeɪn /

noun

  1. the usual US and Canadian name for cos 1

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of romaine

1905–10; < French, feminine of romain Roman


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

But this week, in the region known as America’s Salad Bowl, around 300,000 pounds of his romaine hearts were chopped and plowed back into the soil.

From The Wall Street Journal ● Jul. 31, 2026

On a large dining plate, serve the romaine hearts whole alongside the bread.

From Salon ● Jul. 25, 2026

The Taylor family is credited with helping to pioneer numerous innovations, from bagged salads to the U.S. industry’s first automated harvesters for romaine lettuce, cabbage and celery.

From The Wall Street Journal ● Jul. 18, 2026

A hunk of romaine was easy pickings for Porkchop and her three flippers.

From Los Angeles Times ● Jan. 28, 2026

Also, I felt confused, because I didn’t know anyone whose favorite food was romaine lettuce.

From "Darius the Great Is Not Okay" by Adib Khorram

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