1. Lettuce with long dark-green leaves in a loosely packed elongated head
   "Caesar salad is traditionally made with romaine lettuce";
   - cos, cos lettuce, romaine
    
2. Lettuce with long dark-green spoon-shaped leaves
   "The Caesar salad required fresh romaine lettuce";
   - cos lettuce, Lactuca sativa longifolia

Derived forms: romaine lettuces

Type of: lettuce

Part of: genus Lactuca, Lactuca

Encyclopedia: Romaine lettuce