Part 669

Bi*val"vous (&?;), a. Bivalvular.

Bi*val"vu*lar (&?;), a. Having two valves.

Bi*vault"ed (&?;), a. [Pref. bi- + vault.] Having two vaults or arches.

Bi*vec"tor (&?;), n. [Pref. bi- + vector.] (Math.) A term made up of the two parts &?; + &?;1 &?;-1, where &?; and &?;1 are vectors.

Bi*ven"tral (&?;), a. [Pref. bi- + ventral.] (Anat.) Having two bellies or protuberances; as, a biventral, or digastric, muscle, or the biventral lobe of the cerebellum.

Biv"i*al (&?;), a. Of or relating to the bivium.

Biv"i*ous (&?;), a. [L. bivius; bis twice + via way.] Having, or leading, two ways.

Bivious theorems and Janus-faced doctrines. Sir T. Browne.

||Biv"i*um (&?;), n. [L., a place with two ways. See Bivious.] (Zoöl.) One side of an echinoderm, including a pair of ambulacra, in distinction from the opposite side (trivium), which includes three ambulacra.

Biv"ouac (&?;), n. [F. bivouac, bivac, prab. fr. G. beiwache, or beiwacht; bei by, near + wachen to watch, wache watch, guard. See By, and Watch.] (Mil.) (a) The watch of a whole army by night, when in danger of surprise or attack. (b) An encampment for the night without tents or covering.

Biv"ouac, v. i. [imp. & p. p. Bivouacked (&?;); p. pr. & vb. n. Bivouacking.] (Mil.) (a) To watch at night or be on guard, as a whole army. (b) To encamp for the night without tents or covering.

Bi"week`ly (&?;), a. [Pref. bi- + weekly.] Occurring or appearing once every two weeks; fortnightly. -- n. A publication issued every two weeks. -- Bi"week"ly, adv.

Bi*wreye" (&?;), v. t. To bewray; to reveal. [Obs.]

Biz"an*tine (&?;). See Byzantine.

Bi*zarre" (&?;), a. [F. bizarre odd, fr. Sp. bizarro gallant, brave, liberal, prob. of Basque origin; cf. Basque bizarra beard, whence the meaning manly, brave.] Odd in manner or appearance; fantastic; whimsical; extravagant; grotesque. C. Kingsley.

Bi*zet" (&?;), n. [Cf. Bezel.] The upper faceted portion of a brilliant-cut diamond, which projects from the setting and occupies the zone between the girdle and the table. See Brilliant, n.

Blab (&?;), v. t. [imp. & p. p. Blabbed (&?;); p. pr. & vb. n. Blabbing.] [Cf. OE. blaberen, or Dan. blabbre, G. plappern, Gael. blabaran a stammerer; prob. of imitative origin. Cf. also Blubber, v.] To utter or tell unnecessarily, or in a thoughtless manner; to publish (secrets or trifles) without reserve or discretion. Udall.

And yonder a vile physician blabbing The case of his patient. Tennyson.

Blab, v. i. To talk thoughtlessly or without discretion; to tattle; to tell tales.

She must burst or blab. Dryden.

Blab, n. [OE. blabbe.] One who blabs; a babbler; a telltale. "Avoided as a blab." Milton.

For who will open himself to a blab or a babbler. Bacon.

Blab"ber (&?;), n. A tattler; a telltale.

Black (&?;), a. [OE. blak, AS. blæc; akin to Icel. blakkr dark, swarthy, Sw. bläck ink, Dan. blæk, OHG. blach, LG. & D. blaken to burn with a black smoke. Not akin to AS. blc, E. bleak pallid. &?;98.] 1. Destitute of light, or incapable of reflecting it; of the color of soot or coal; of the darkest or a very dark color, the opposite of white; characterized by such a color; as, black cloth; black hair or eyes.

O night, with hue so black! Shak.

2. In a less literal sense: Enveloped or shrouded in darkness; very dark or gloomy; as, a black night; the heavens black with clouds.

I spy a black, suspicious, threatening cloud. Shak.

3. Fig.: Dismal, gloomy, or forbidding, like darkness; destitute of moral light or goodness; atrociously wicked; cruel; mournful; calamitous; horrible. "This day's black fate." "Black villainy." "Arise, black vengeance." "Black day." "Black despair." Shak.