romaine

American

[roh-meyn, ruh-] / roʊˈmeɪn, rə- /

noun

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

romaine British

/ rəʊˈmeɪn /

noun

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.

At the grocery store, I linger in the produce section with the reverence of a botanist on sabbatical, basket brimming with romaine, iceberg, butter — anything leafy and remotely flirty.

From Salon • May 26, 2025

We’ll make veggie sandwiches throughout the week, which is like romaine lettuce, mushrooms, tomatoes and cucumber.

From Los Angeles Times • May 16, 2025

On Friday, Meghan posted a video to Instagram which showed her wearing a hat with the writing "lettuce romaine calm" stitched across the front of it.

From BBC • Mar. 7, 2025

The deployment of lettuces other than romaine — e.g., kale, chicories, radicchio — should always be accompanied by a menu-warning, so that those opposed may opt out.

From Seattle Times • Mar. 7, 2024

Maybe they were enjoying another Ping-Pong table full of romaine lettuce and Babou’s sekanjabin.

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

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023