a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes.
a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.
a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.
a chattering or flighty, light-headed person.
a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.
1750, from It. (Neapolitan or Calabrian dialect) lava "torrent, stream," traditionally from L. lavare "to wash" (see lave). Originally applied in It. to flash flood rivulets after downpours, then to streams of molten rock from Vesuvius. Alternative etymology is from L. labes
"a fall," from labi "to fall." Lava lamp is attested from 1970, earlier lava light (reg. U.S., 1968, as Lava Lite).
Molten rock that flows from a volcano or from a crack in the Earth. Most lava flows at a rate of a few kilometers per hour, but rates as high as 60 km (37 mi) per hour have been observed. Lava that contains abundant iron- and magnesium-rich components usually erupts with temperatures between 1,000°C and 1,200°C (1,832deg;F and 2,192°F). Lava that contains abundant silica- and feldspar-rich components usually erupts with temperatures between 800°C and 1,000°C (1,472deg;F and 1,832°F). Compare magma.
The igneous rock formed when this substance cools and hardens. Depending on its composition and the rate at which it cools, lava can be glassy, very finely grained, ropelike, or coarsely grained. When it cools underwater, it cools in pillow-shaped masses. See also aa, pahoehoe, pillow lava.
A language for VLSI that deals with "sticks", i.e. wires represented as lines with thickness. ["A Target Language for Silicon Compilers", R.J. Matthews et al, IEEE COMPCON, 1982, pp. 349-353]. (1994-12-07)