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The lapping of one thing over another; as, an overlap of six inches; an overlap of a slate on a roof.

The arrangement of the petals in a flower bud, as to folding, overlapping, etc.; prefloration. Gray. [Spelt also estivation.]

ts, Almayne rivets, or Alman rivets, a sort of light armor from Germany, characterized by overlapping plates, arranged to slide on rivets, and thus afford great flexibility.

A coast of armor for the body, consisting of scales or plates, sometimes overlapping each other, generally of metal, and sewed to linen or other material. It was worn in the Middle Ages. [Written also brigantine.] Jer. xlvi. 4. Then put on all thy gorgeous arms, thy helmet, And brigandine of brass. Milton.…

A joint in which the edges or ends of the pieces united come squarely together instead of overlapping. See 1st Butt, 8.

Burrill. -- Bead and butt. See under Bead. -- Butt and butt, joining end to end without overlapping, as planks. -- Butt weld (Mech.), a butt joint, made by welding together the flat ends, or edges, of a piece of iron or steel, or of separate pieces, without having them overlap. See Weld. -- Full butt, headfirst wit…

ostrich. Its head is armed with a kind of helmet of horny substance, consisting of plates overlapping each other, and it has a group of long sharp spines on each wing which are used as defensive organs. It is a shy bird, and runs with great rapidity. Other species inhabit New Guinea, Australia, etc.…

A kind of joint by which an overlap joint is changed to a flush joint, by means of a gradually deepening rabbet, as at the ends of clinker-built boats.

Having the side planks (af a boat) so arranged that the lower edge of each overlaps the upper edge of the plank next below it like clapboards on a house. See Lapstreak.

e hitch (Naut.) See under Hitch. -- Clove hook (Naut.), an iron two-part hook, with jaws overlapping, used in bending chain sheets to the clews of sails; -- called also clip hook. Knight.

Overlapping, as the elytra of certain beetles.

Arranged so as to overlap each other; as, petals in contorted or convolute æstivation.

That portion of a slate, tile, or shingle, which is hidden by the overlap of the course above. Knight.

A structure which overlaps the mouth of certain insects.

Overlapping each other; -- said of leaves whose bases are folded so as to overlap and bestride the leaves within or above them, as in the iris.

A defense for the shoulder, composed of flexible overlapping plates of metal, used in the 15th century; -- the origin of the modern epaulette. Fairholt.

The siliceous shell of a diatom. It is composed of two valves, one overlapping the other, like a pill box and its cover.

age or flower, as of most trees and shrubs in the temperate zone, is protected by closely overlapping scales.

A suborder of Hemiptera, in which both pairs of wings are similar in texture, and do not overlap when folded, as in the cicada. See Hemiptera.

e scales on the leaf buds of plants and the cups of some acorns, or the scales of fishes; overlapping each other at the margins, as leaves in æstivation.