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The top; the highest point. Fixed on the summit of the highest mount. Shak.

Having no summit.

The height or top of anything. [Obs.] Swift.

A reddish glow seen near sunset or sunrise on the summits of mountains; specif., a reillumination sometimes observed after the summits have passed into shadow, supposed to be due to a curving downward (refraction) of the light rays from the west resulting from the cooling of the air.

The perpendicular distance from the base of a figure to the summit, or to the side parallel to the base; as, the altitude of a triangle, pyramid, parallelogram, frustum, etc.

The tip, top, point, or angular summit of anything; as, the apex of a mountain, spire, or cone; the apex, or tip, of a leaf.

At or belonging to an apex, tip, or summit. Gray.

To extend over and beyond the base or support; to overhang; to jut. To the dreadful summit of the cliff That beetles o'er his base into the sea. Shak. Each beetling rampart, and each tower sublime. Wordsworth.

nd forth or reflect glowing or brilliant light; to show a blaze. And far and wide the icy summit blazed. Wordsworth.

Destitute of feathers; naked; unfledged. An in the leafy summit, spied a nest, Which, o'er the callow young, a sparrow pressed. Dryden.

Expanding first at the summit, and later at the base, as a flower cluster.

A small rodent (Lagamys princeps) inhabiting the summits of the Rocky Mountains; -- also called crying hare, calling hare, cony, American pika, and little chief hare.

The summit of a hill or mountain ridge.

The topmost part of anything; the summit. The steepy crown of the bare mountains. Dryden.

Top; summit; acme. R. North.

Reclining on the ground, as if too weak to stand, and tending to rise at the summit or apex; as, a decumbent stem. Gray.

Having two plane faces; as, the dihedral summit of a crystal. Dihedral angle, the angular space contained between planes which intersect. It is measured by the angle made by any two lines at right angles to the two planes.

Notched at the summit.

A plant which increases in size by internal growth and elongation at the summit, having the wood in the form of bundles or threads, irregularly distributed throughout the whole diameter, not forming annual layers, and with no distinct pith. The leaves of the endogens have, usually, parallel veins, their flowers are mos…

Increasing by internal growth and elongation at the summit, instead of externally, and having no distinction of pith, wood, and bark, as the rattan, the palm, the cornstalk.