Fluor, flōō′or, n. a mineral often described as chemically fluate of lime, but really calcium fluoride, found abundantly in Derbyshire—also Flu′or-spar, Flu′orite.—ns. Fluores′cein, a coal-tar product, little used in dyeing, the colour not being fast; Fluores′cence, a peculiar blue appearance exhibited by certain substances exposed to sunlight, and especially observable in a dilute solution of sulphate of quinine.—adjs. Fluores′cent, having the property of fluorescence; Fluor′ic.—ns. Flu′oride, a binary compound of fluorine with another element; Flu′orine, an elementary substance allied to chlorine, obtained chiefly from fluor; Flu′orotype, a photographic process in which salts of fluoric acid were employed for the purpose of producing images in the camera; Fluosil′icate, a compound of fluosilicic acid with some base.—adj. Fluosilic′ic, composed of silicon and fluorine. [A name given by the alchemists to all mineral acids because of their fluidity, from L. fluĕre, to flow.]
Flurry, flur′i, n. a sudden blast or gust: agitation: bustle: the death-agony of the whale: a fluttering assemblage of things, as snowflakes.—v.t. to agitate, to confuse:—pr.p. flurr′ying; pa.p. flurr′ied.—v.t. Flurr, to scatter.—v.i. to fly up. [Prob. onomatopœic, suggested by flaw, hurry, &c.]
Flush, flush, n. a flow of blood to the face causing redness: sudden impulse: bloom, freshness, vigour: abundance.—v.i. to become red in the face: to flow swiftly.—v.t. to make red in the face: to cleanse by a copious flow of water: to elate, excite the spirits of: mostly in the pa.p. flushed (with victory).—adj. (of weather) hot and heavy: abounding: well supplied, as with money: (Shak.) in full bloom.—n. Flush′-box, a rectangular tank supplied with water for flushing the bowls of water-closets.—adj. Flushed, suffused with ruddy colour: excited.—ns. Flush′er, one who flushes sewers; Flush′ing, action of the verb flush: sudden reddening; Flush′ness, quality of being flush.—adj. Flush′y, reddish. [Prob. orig. identical with succeeding word, but meaning influenced by phonetic association with flash, the senses relating to colour by blush.]
Flush, flush, v.i. to start up like an alarmed bird.—v.t. to rouse and cause to start off.—n. the act of starting: (Spens.) a bird, or a flock of birds so started. [Prob. onomatopœic; suggested by fly, flutter, and rush.]
Flush, flush, v.t. to make even: to fill up to the level of a surface (often with up).—adj. having the surface level with the adjacent surface. [Prob. related to flush above.]
Flush, flush, n. in card-playing, a hand in which all the cards or a specified number are of the same suit.—adj. in poker, consisting of cards all of the same suit.—Straight, or Royal, flush, in poker, a sequence of five cards of the same suit. [Prob. Fr. flux—L. fluxus, flow.]
Fluster, flus′tėr, n. hurrying: confusion: heat.—v.t. to make hot and confused: to fuddle.—v.i. to bustle: to be agitated or fuddled.—v.t. Flus′terāte, to fluster.—n. Flusterā′tion.—adj. Flus′tered, fuddled: flurried.—n. Flus′terment.—adj. Flus′tery, confused. [Ice. flaustr, hurry.]
Flustra, flus′tra, n. one of the commonest genera of marine Polyzoa.
Flute, flōōt, n. a musical pipe with finger-holes and keys sounded by blowing: in organ-building, a stop with stopped wooden pipes, having a flute-like tone: one of a series of curved furrows, as on a pillar, called also Fluting: a tall and narrow wine-glass: a shuttle in tapestry-weaving, &c.—v.i. to play the flute.—v.t. to play or sing in soft flute-like tones: to form flutes or grooves in.—adj. Flut′ed, ornamented with flutes, channels, or grooves.—ns. Flut′er; Fluti′na (tē′-), a kind of accordion; Flut′ing-machine′, a machine for corrugating sheet-metal, also a wood-turning machine for forming twisted, spiral, and fluted balusters; Flut′ist.—adj. Flut′y, in tone like a flute. [O. Fr. fleüte; ety. dub.]
Flutter, flut′ėr, v.i. to move about with bustle: to vibrate: to be in agitation or in uncertainty: (obs.) to be frivolous.—v.t. to throw into disorder: to move in quick motions.—n. quick, irregular motion: agitation: confusion: a hasty game at cards, &c. [A.S. flotorian, to float about, from flot, the sea, stem of fléotan, to float.]