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A white crystalline compound of piperidine and piperic acid. It is obtained from the black pepper (Piper nigrum) and other species.

A white crystalline substance obtained by oxidation of piperic acid, and regarded as a complex aldehyde.

A hydrocarbon obtained by decomposition of certain piperidine derivatives.

The hollow stem or tube of a pipe used for smoking tobacco, etc. Took a long reed for a pipestem. Longfellow.

A kind of clay slate, carved by the Indians into tobacco pipes. Cf. Catlinite.

A small glass tube, often with an enlargement or bulb in the middle, and usually graduated, -- used for transferring or delivering measured quantities.

The Dutchman's pipe. See under Dutchman.

caceous shrub (Leucothoë acuminata) of the southern United States, from the wood of which pipe bowls are made.

Any plant of a genus (Eriocaulon) of aquatic or marsh herbs with soft grass-like leaves.

Playing on a musical pipe. "Lowing herds and piping swains." Swift.

A small European bat (Vesperugo pipistrellus); -- called also flittermouse.

s, and the great length of the hind claw. They are, therefore, often called titlarks, and pipit larks.

A small earthen boiler.

A name given to apples of several different kinds, as Newtown pippin, summer pippin, fall pippin, golden pippin. We will eat a last year's pippin. Shak. Normandy pippins, sun-dried apples for winter use.

Same as Peepul tree.

Any one of numerous species of small clamatorial birds belonging to Pipra and allied genera, of the family Pipridæ. The male is usually glossy black, varied with scarlet, yellow, or sky blue. They chiefly inhabit South America.

Of or pertaining to the pipras, or the family Pipridæ.

A low evergreen plant (Chimaphila umbellata), with narrow, wedge-lanceolate leaves, and an umbel of pretty nodding fragrant blossoms. It has been used in nephritic diseases. Called also prince's pine.

Like a pipe; hollow-stemmed. Keats.

A pipe for the passage of air; esp. a ventilating pipe.