An edible plant, Lactuca sativa and its close relatives, having a head of green and/or purple leaves.

plural of lettuce

A lettuce cultivar (Lactuca sativa var. capitata) noted for its crunchiness; the most familiar of all lettuces sold in the United States.

Winter purslane, Montia perfoliata, now Claytonia perfoliata

Lactucarium.

Tropical duckweed, water lettuce (Pistia stratiotes).

(literally) A leaf of lettuce. / (Australia) An Australian one hundred dollar bank note, due to its green colour; compare greenback (US).

(US dialect) A goldfinch.

A variety of soft lettuce.

plural of sea lettuce