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A brownish green pigment found in human gallstones and in old bile. It is a derivative of bilirubin.

A round, low-crowned felt hat; a wideawake. "The undignified billycocks and pantaloons of the West." B. H. Chamberlain.

Bisexual. [Obs.] Sir T. Browne.

A dark brown pigment extracted from the soot of wood.

Bisulcate. Sir T. Browne.

ous matter. It burns with a yellow smoky flame. -- Bituminous limestone, a mineral of a brown or black color, emitting an unpleasant smell when rubbed. That of Dalmatia is so charged with bitumen that it may be cut like soap. -- Bituminous shale, an argillaceous shale impregnated with bitumen, often accompanying coal…

Having, or leading, two ways. Bivious theorems and Janus-faced doctrines. Sir T. Browne.

ption of the court of exchequer of England, an official statement of the revenues of the crown, etc.

A sweet and juicy variety of European grape, of a dark purplish black color, much grown under glass in northern latitudes.

A small European song bird (Sylvia atricapilla), with a black crown; the mock nightingale.

-jack. It is a zinc sulphide, but often contains some iron. Its color is usually yellow, brown, or black, and its luster resinous.

as, the storm and the clouds have blown over. -- To blow up, to be torn to pieces and thrown into the air as by an explosion of powder or gas or the expansive force of steam; to burst; to explode; as, a powder mill or steam boiler blows up. "The enemy's magazines blew up." Tatler.

The peepul tree; esp., the very ancient tree standing at Anurajahpoora in Ceylon, grown from a slip of the tree under which Gautama is said to have received the heavenly light and so to have become Buddha. The sacred bo tree of the Buddhists (Ficus religiosa), which is planted close to every temple, and attracts almost…

A knot or short curl of hair; also, a bob wig. A plain brown bob he wore. Shenstone.

merican singing bird (Dolichonyx oryzivorus). The male is black and white; the female is brown; -- called also, ricebird, reedbird, and Boblincoln. The happiest bird of our spring is the bobolink. W. Irving.

gale. -- Bog ore. (Min.) (a) An ore of iron found in boggy or swampy land; a variety of brown iron ore, or limonite. (b) Bog manganese, the hydrated peroxide of manganese. -- Bog rush (Bot.), any rush growing in bogs; saw grass. -- Bog spavin. See under Spavin.

y the action of heat. -- To boil over, to run over the top of a vessel, as liquid when thrown into violent agitation by heat or other cause of effervescence; to be excited with ardor or passion so as to lose self-control.

A humming sound; a booming. To . . . silence the bombilation of guns. Sir T. Browne.

cercus eurycercus of West Africa, and B. isaaci of East Africa) of a reddish or chestnut-brown color with narrow white stripes on the body. Their flesh is especially esteemed as food.

Orcynus pelamys) allied to the tunny. It is about three feet long, blue above, with four brown stripes on the sides. It is sometimes found on the American coast.