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A group of spiders having only two lunglike organs. [Written also Dipneumones.]

siren, which present the closest approximation to the Amphibia. The air bladder acts as a lung, and the nostrils open inside the mouth. See Ceratodus, and Illustration in Appendix.

in breadth or in all directions; the state of being Distended; as, the distention of the lungs.

To plunge into water head foremost; to thrust the body under, or deeply into, water or other fluid. It is not that pearls fetch a high price because men have dived for them. Whately.

also doolee and doolie.] [East Indies] Having provided doolies, or little bamboo chairs slung on four men's shoulders, in which I put my papers and boxes, we next morning commenced the ascent. J. D. Hooker.

e, a trick; a shift; an artifice. These men are too well acquainted with the chase to be flung off by any false steps or doubles. Addison.

To plunge suddenly into water; to duck; to immerse; to dowse. Bp. Stillingfleet.

To plunge, or duck into water; to immerse; to douse.

To take into the lungs; to inhale; to inspire; hence, also, to utter or produce by an inhalation; to heave. "Where I first drew air." Milton. Drew, or seemed to draw, a dying groan. Dryden.

To thrust or plunge under water or other liquid and suddenly withdraw. Adams, after ducking the squire twice or thrice, leaped out of the tub. Fielding.

One who, or that which, ducks; a plunger; a diver.

. t. & i. Ducking stool, a stool or chair in which common scolds were formerly tied, and plunged into water, as a punishment. See Cucking stool. The practice of ducking began in the latter part of the 15th century, and prevailed until the early part of the 18th, and occasionally as late as the 19th century. Blackstone.…

cysts or tumors (called hydatid cysts) in various organs, but especially in the liver and lungs, which often cause death. It is the larval stage of the Tænia echinococcus, a small tapeworm peculiar to the dog.

One of the dorsal branches of the main bronchi in the lungs of birds.

excrete, as the indigestible matter of the food; in an extended sense, to excrete by the lungs, skin, or kidneys.

To separate; to expel from the system; to excrete; as, the kidneys eliminate urea, the lungs carbonic acid; to eliminate poison from the system.

o wash or strain out so as to purify; as, to elutriate the blood as it passes through the lungs; to strain off or decant, as a powder which is separated from heavier particles by being drawn off with water; to cleanse, as by washing.

To rise out of a fluid; to come forth from that in which anything has been plunged, enveloped, or concealed; to issue and appear; as, to emerge from the water or the ocean; the sun emerges from behind the moon in an eclipse; to emerge from poverty or obscurity. "Thetis . . . emerging from the deep." Dryden. Those who h…

A swelling produced by gas or air diffused in the cellular tissue. Emphysema of the lungs, Pulmonary emphysema (Med.), a common disease of the lungs in which the air cells are distended and their partition walls ruptured by an abnormal pressure of the air contained in them.

One of the main bronchi in the lungs of birds.