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- Mullein foxglove, an American herb (Seymeria macrophylla) with coarse leaves and yellow tubular flowers with a spreading border. -- Petty mullein, the cowslip. Dr. Prior.

having four lungs and only four spinnerets. They do not spin webs, but usually construct tubes in the earth, which are often furnished with a trapdoor. The South American bird spider (Mygale avicularia), and the crab spider, or matoutou (M. cancerides) are among the largest species. Some of the species are erroneously…

An apparatus for smoking tobacco. It has a long flexible tube, and the smoke is drawn through water.

partitions, which are traversed and connected together by a continuous and nearly central tube or siphuncle. See Tetrabranchiata.

A segmental tubule; one of the tubules of the primitive urinogenital organs; a segmental organ. See Illust. under Loeven's larva.

as, the neurenteric canal, which, in embroys of many vertebrates, connects the medullary tube and the primitive intestine. See Illust. of Ectoderm.

re received by a plane mirror placed diagonally in the axis, and near the open end of the tube, and thrown at right angles toward one side of the tube, where the image is formed and viewed through the eyeplace. -- Newtonian theory of light. See Note under Light.

taining nickel, which greatly increases its strength. It is used for armor plate, bicycle tubing, propeller shafts, etc.

The protuberance through which milk is drawn from the breast or mamma; the mammilla; a teat; a pap.

A knot, a knob; a protuberance; a swelling.

A short tube, usually tapering, forming the vent of a hose or pipe.

A jag, or snag; a knob; a protuberance; also, the point or gist, as of a story. [Colloq.]

so chestnut coal. -- Nut crab (Zoöl.), any leucosoid crab of the genus Ebalia as, Ebalia tuberosa of Europe. -- Nut grass (Bot.), a plant of the Sedge family (Cyperus rotundus, var. Hydra), which has slender rootstocks bearing small, nutlike tubers, by which the plant multiplies exceedingly, especially in cotton fiel…

ened in feelings, esp. against moral or mollifying influences; unyielding; hard-hearted; stubbornly wicked. The very custom of evil makes the heart obdurate against whatsoever instructions to the contrary. Hooker. Art thou obdurate, flinty, hard as steel, Nay, more than flint, for stone at rain relenteth Shak.…

sually unreasonable adherence to an opinion, purpose, or system; unyielding disposition; stubborness; pertinacity; persistency; contumacy. You do not well in obstinacy To cavil in the course of this contract. Shak. To shelter their ignorance, or obstinacy, under the obscurity of their terms. Locke.

nion, purpose, or course; persistent; not yielding to reason, arguments, or other means; stubborn; pertinacious; -- usually implying unreasonableness. I have known great cures done by obstinate resolution of drinking no wine. Sir W. Temple. No ass so meek, no ass so obstinate. Pope. Of sense and outward things. Wordswo…

Obstinacy; stubbornness. [Obs.] Jer. Taylor.

A Peruvian name for certain species of Oxalis (O. crenata, and O. tuberosa) which bear edible tubers.

An instrument, consisting of a tube having one end open and the other end covered with a thin flexible membrance to the center of which is attached a small mirror. It is used for exhibiting upon a screen, by means of rays reflected from the mirror, the vibratory motions caused by sounds produced at the open end of the…

der Close, a. -- Open diapason (Mus.), a certain stop in an organ, in which the pipes or tubes are formed like the mouthpiece of a flageolet at the end where the wind enters, and are open at the other end. -- Open flank (Fort.), the part of the flank covered by the orillon. -- Open-front furnace (Metal.), a blast fu…