Definition of lettuce green in US English:

lettuce green

noun

  • 1A medium shade of green resembling that of lettuce.

  • 2North American. In plural Salad greens.

adjective

  • Usually with hyphen. Of a medium green colour resembling that of lettuce.

Origin

Mid 19th century; earliest use found in Edinburgh New Philosophical Journal. From lettuce + green.

Pronunciation

lettuce green

/ˌlɛtɪs ˈɡriːn/