LETTUCE
Let"tuce, n. Etym: [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.] (Bot.)
Defn: A composite plant of the genus Lactuca (L. 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 L. Canadensis. 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.
LETUARY
Let"u*a*ry, n.
Defn: Electuary. [Obs.] Chaucer.
LET-UP
Let"-*up`, n. Etym: [See Let to forbear.]
Defn: Abatement; also, cessation; as, it blew a gale for three days without any let-up. [Colloq.]
LEUC-
Leuc-
Defn: . Same as Leuco-.
LEUCADENDRON
Leu`ca*den"dron, n. Etym: [NL., fr. Gr. (Bot.)
Defn: A genus of evergreen shrubs from the Cape of Good Hope, having handsome foliage. Leucadendron argenteum is the silverboom of the colonists.