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A person with a large head; a numskull; a dunce. [Low] Knowles.

A body of Christian believers, holding the same creed, observing the same rites, and acknowledging the same ecclesiastical authority; a denomination; as, the Roman Catholic church; the Presbyterian church.

a genus of poisonous umbelliferous plants, of which the water hemlock or cowbane is best known.

A genus of hemipterous insects of which the bedbug is the best known example. See Bedbug.

ommon tie; a class or division of society; a coterie; a set. As his name gradually became known, the circle of his acquaintance widened. Macaulay.

fects, a fact or event; an attendant thing or state of things. The circumstances are well known in the country where they happened. W. Irving.

To be entitled to anything; to deduce a right or title; to have a claim. We must know how the first ruler, from whom any one claims, came by his authority. Locke.

A work of acknowledged excellence and authrity, or its author; -- originally used of Greek and Latin works or authors, but now applied to authors and works of a like character in any language. In is once raised him to the rank of a legitimate English classic. Macaulay.

ng bluffs along the rivers and valleys, formerly supposed to be of one formation, but now known to be partly Silurian and partly Devonian.

encompass. O . . . that Neptune's arms, who clippeth thee about, Would bear thee from the knowledge of thyself. Shak.

-Club moss (Bot.), an evergreen mosslike plant, much used in winter decoration. The best know species is Lycopodium clavatum, but other Lycopodia are often called by this name. The spores form a highly inflammable powder. -- Club root (Bot.), a disease of cabbages, by which the roots become distorted and the heads sp…

This clue once found unravels all the rest. Pope. Serve as clues to guide us into further knowledge. Locke.

land near it. He sees in English ships the Holland coast. Dryden. We the Arabian coast do know At distance, when the species blow. Waller. The coast is clear, the danger is over; no enemy in sight. Dryden. Fig.: There are no obstacles. "Seeing that the coast was clear, Zelmane dismissed Musidorus." Sir P. Sidney. Coast…

ak. Codling moth (Zoöl.), a small moth (Carpocapsa Pomonella), which in the larval state (known as the apple worm) lives in apples, often doing great damage to the crop.

A number or letter put before a letter or quantity, known or unknown, to show how many times the latter is to be taken; as, 6x; bx; here 6 and b are coefficients of x.

a coenurus) which forms bladderlike sacs in the brain of sheep, causing the fatal disease known as water brain, vertigo, staggers or gid.

Equally extensive; having as, consciousness and knowledge are coextensive. Sir W. Hamilton. -- Co`ex*ten"sive*ly, adv. -- Co`ex*ten"sive*ness, n.

The act of knowing; knowledge; perception. I will not be myself nor have cognation Of what I feel: I am all patience. Shak.

Knowing, or apprehending by the understanding; as, cognitive power. South.

Capable of being known or apprehended; as, cognizable causes.