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d part of the object glass of a telescope or other optical instrument; as, a telescope of four-inch aperture.

A follower of Apollinaris, Bishop of Laodicea in the fourth century, who denied the proper humanity of Christ.

the sixth century, and some assert that it can be found in the writings of Ambrose in the fourth century. -- Apostle spoon (Antiq.), a spoon of silver, with the handle terminating in the figure of an apostle. One or more were offered by sponsors at baptism as a present to the godchild. B. Jonson.

The time an apprentice is serving (sometimes seven years, as from the age of fourteen to twenty-one).

The fourth month of the year.

A canal or passage; as, the aqueduct of Sylvius, a channel connecting the third and fourth ventricles of the brain.

The name of the ship which carried Jason and his fifty-four companions to Colchis, in quest of the Golden Fleece.

Pertaining to Arius, a presbyter of the church of Alexandria, in the fourth century, or to the doctrines of Arius, who held Christ to be inferior to God the Father in nature and dignity, though the first and noblest of all created beings. -- n.

se of colleges; as, master of arts. In fearless youth we tempt the heights of arts. Pope. Four years spent in the arts (as they are called in colleges) is, perhaps, laying too laborious a foundation. Goldsmith.

One of the four subkingdoms in the classification of Cuvier. It has been much modified by later writers.

each foot (corresponding to the middle finger in man) is asymmetrical and paired with the fourth digit, as in the hog, the sheep, and the ox; - - opposed to Perissodactyla.

A choriambic verse, first used by the Greek poet Asclepias, consisting of four feet, viz., a spondee, two choriambi, and an iambus.

One who, or that which, assists; a helper; an auxiliary; a means of help. Four assistants who his labor share. Pope. Rhymes merely as assistants to memory. Mrs. Chapone.

To unite in making. [Obs. & R.] The four elements . . . have atoned A noble league. Ford.

o begin to act upon, injuriously or destructively; to begin to decompose or waste. On the fourth of March he was attacked by fever. Macaulay. Hydrofluoric acid . . . attacks the glass. B. Stewart.

with, the principal key; those, namely, of its fifth above, or dominant, its fifth below (fourth above), or subdominant, and its relative minor or major.

In the form of four unhusked filberts; as, an avellane cross.

A game of chance and skill, played by two persons on a "board" marked off into twenty-four spaces called "points". Each player has fifteen pieces, or "men", the movements of which from point to point are determined by throwing dice. Formerly called tables. Backgammon board , a board for playing backgammon, often made i…

d, forming the of a fire on the hearth. [U.S.] There was first a backlog, from fifteen to four and twenty inches in diameter and five feet long, imbedded in the ashes. S. G. Goodrich.

Full of deadly or pernicious influence; destructive. "Baleful enemies." Shak. Four infernal rivers that disgorge Into the burning lake their baleful streams. Milton.