sea lettuce

4 definitions found

sea lettuce - Collaborative International Dictionary of English v.0.48 :

  Sea lettuce \Sea" let"tuce\ (Bot.)
     The green papery fronds of several seaweeds of the genus
     Ulva, sometimes used as food.
     [1913 Webster]

  Lettuce \Let"tuce\ (l[e^]t"t[i^]s), n. [OE. letuce, prob.
     through Old French from some Late Latin derivative of L.
     lactuca lettuce, which, according to Varro, is fr. lac,
     lactis, milk, on account of the milky white juice which flows
     from it when it is cut: cf. F. laitue. Cf. Lacteal,
     Lactucic.]
     1. (Bot.) A composite plant of the genus Lactuca (Lactuca  sativa
        ), the leaves of which are used as salad. Plants of
        this genus yield a milky juice, from which lactucarium is
        obtained. The commonest wild lettuce of the United States
        is Lactuca Canadensis.
        [1913 Webster]
  
     2. United States currency; dollar bills; greenbacks. [slang]
        [PJC]
  
     Hare's lettuce, Lamb's lettuce. See under Hare, and
        Lamb.
  
     Lettuce opium. See Lactucarium.
  
     Sea lettuce, certain papery green seaweeds of the genus
        Ulva.
        [1913 Webster]

  Ulva \Ul"va\, prop. n. [L., sedge.] (Bot.)
     A genus of thin papery bright green seaweeds including the
     kinds called sea lettuce.
     [1913 Webster]

sea lettuce - WordNet (r) 2.1 (2005) :

  sea lettuce
      n 1: seaweed with edible translucent crinkly green fronds [syn:
           sea lettuce, laver]