romaine

American  

[roh-meyn, ruh-] / roʊˈmeɪn, rə- /

noun

1. 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.

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romaine British  

/ rəʊˈmeɪn /

noun

1. the usual US and Canadian name for cos 1

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Etymology

Origin of romaine

1905–10; < French, feminine of romain Roman

Example Sentences

Mind you, this is the same influencer who went viral for making a “deconstructed salad,” which is essentially a whole romaine leaf dressed in lemon juice, olive oil, salt and pepper.

From Salon • Nov. 9, 2025

The outbreak — which killed one person and sickened at least 88 more — was linked to romaine lettuce and spanned at least 15 states, including Missouri and Indiana.

From Los Angeles Times • Apr. 24, 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

“What happened to good, old-fashioned romaine? Or iceberg. I remember when everyone ate iceberg lettuce.”

From "South of Somewhere" by Kalena Miller