LAMARCKISM n.
The theory that structural variations, characteristic of species and genera, are produced in animals and plants by the direct influence of physical environments, and esp., in the case of animals, by effort, or by use or disuse of certain organs.
LARRIKIN n. 2 definitions
A rowdy street loafer; a rowdyish or noisy ill-bred fellow; -- variously applied, as to a street blackguard, a street Arab, a youth given to horse-play, etc. [Australia & Eng.] -- a.
LASSO n. 2 definitions
d, being at the same time turned inside out. The thread is able to penetrate the flesh of various small, soft-bodied animals, and carries a subtle poison by which they are speedily paralyzed and killed. The threads, at the same time, hold the prey in position, attached to the tentacles. Some of the jellyfishes, as the…
LEAD n. 25 definitions
-- Krems lead, Kremnitz lead Etym: [so called from Krems or Kremnitz, in Austria], a pure variety of white lead, formed into tablets, and called also Krems, or Kremnitz, white, and Vienna white. -- Lead arming, tallow put in the hollow of a sounding lead. See To arm the lead (below). -- Lead colic. See under Colic.…
LEAF n. 4 definitions
crumpling and fastening leaves together in clusters. -- Leaf cutter (Zoöl.) , any one of various species of wild bees of the genus Megachile, which cut rounded pieces from the edges of leaves, or the petals of flowers, to be used in the construction of their nests, which are made in holes and crevices, or in a leaf ro…