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An oval sac or cell, found in the leaves of certain plants of the order Araceæ. It has an opening at each end through which raphides, generated inside, are discharged.

Having two glands, as a plant.

Of pertaining to, or resembling, the family of plants of which the trumpet flower is an example.

of a virulent poison extracted from Aconitum ferox or other species of aconite: also, the plant itself.

A piece of thick plank, armed with iron plates, and fixed on the bow or fore channels of a vessel, for the bill or fluke of the anchor to rest on. Totten.

e, restrain, or hold by physical force or influence of any kind; as, attraction binds the planets to the sun; frost binds the earth, or the streams. He bindeth the floods from overflowing. Job xxviii. 11. Whom Satan hath bound, lo, these eighteen years. Luke xiii. 16.

A plant of the genus Convolvulus; as, greater bindweed (C. Sepium); lesser bindweed (C. arvensis); the white, the blue, the Syrian, bindweed. The black bryony, or Tamus, is called black bindweed, and the Smilax aspera, rough bindweed. The fragile bindweed bells and bryony rings. Tennyson.

The winding or twining stem of a hop vine or other climbing plant.

Having two names; -- used of the system by which every animal and plant receives two names, the one indicating the genus, the other the species, to which it belongs. Binomial theorem (Alg.), the theorem which expresses the law of formation of any power of a binomial.

The branch of biology which deals with the geographical distribution of animals and plants. It includes both zoögeography and phytogeography. -- Bi`o*ge`o*graph"ic (#), a. -- Bi`o*ge`o*graph"ic*al*ly (#), adv.

to do with the origin, structure, development, function, and distribution of animals and plants.

An aspect of the planets when they are distant from each other by twice the fifth part of a great circle -- that is, twice 72 degrees.

An orchideous plant with matted roots, of the genus Neottia (N. nidus-avis.) Bird's-nest pudding, a pudding containing apples whose cores have been replaces by sugar. -- Yellow bird's nest, a plant, the Monotropa hypopitys.

A plant with a small bright flower, as the Adonis or pheasant's eye, the mealy primrose (Primula farinosa), and species of Veronica, Geranium, etc.

A papilionaceous plant, the Ornithopus, having a curved, cylindrical pod tipped with a short, clawlike point. Bird's-foot trefoil. (Bot.) (a) A genus of plants (Lotus) with clawlike pods. L. corniculatas, with yellow flowers, is very common in Great Britain.

An herbaceous plant (Trillium erectum), and its astringent rootstock, which is said to have medicinal properties.

A plant of the genus Mitella; miterwort. Longfellow.

An umbelliferous plant of the genus Ammi.

Wood betony (Stachys betonica); also, the plant called fennel flower (Nigella Damascena), or devil-in-a-bush.

An herbaceous plant of the genus Polygonum, section Bistorta; snakeweed; adderwort. Its root is used in medicine as an astringent.