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A block for scotching a wheel. Hub plank (Highway Bridges), a horizontal guard plank along a truss at the height of a wagon-wheel hub. -- Up to the hub, as far as possible in embarrassment or difficulty, or in business, like a wheel sunk in mire; deeply involved. [Colloq.]

hat will set, or form a firm, strong mass, under water. -- Hydraulic main (Gas Works), a horizontal pipe containing water at the bottom into which the ends of the pipes from the retorts dip, for passing the gas through water in order to remove ammonia. -- Hydraulic mining, a system of mining in which the force of a j…

A horizontal section of a building or other object, showing its true dimensions according to a geometric scale; a ground plan; a map; also, the art of making such plans.

A direction or tendency from the true vertical or horizontal direction; as, the inclination of a column, or of a road bed.

In any framed work, a horizontal tie other than sill and plate or other principal ties, securing uprights to one another.

lled the flying jib boom. [Written also gib boom.] -- Jib crane (Mach.), a crane having a horizontal jib on which a trolley moves, bearing the load. -- Jib door (Arch.), a door made flush with the wall, without dressings or moldings; a disguised door. -- Jib header (Naut.), a gaff-topsail, shaped like a jib; a jib- h…

A horizontal table carrying a revolving mold, on which earthen vessels are shaped by rapid motion; a potter's wheel.

A piece of timber laid horizontally, or nearly so, to which the planks of the floor, or the laths or furring strips of a ceiling, are nailed; -- called, according to its position or use, binding joist, bridging joist, ceiling joist, trimming joist, etc. See Illust. of Double-framed floor, under Double, a.…

, one of the timbers or sections of which a keel is composed. On even keel, in a level or horizontal position, so that the draught of water at the stern and the bow is the same. Ham. Nav. Encyc.

acture arising from lateral pressure. -- Lateral system (Bridge Building), the system of horizontal braces (as between two vertical trusses) by which lateral stiffness is secured.

representation of a piece of latticework used as a bearing, the bands being vertical and horizontal. Lattice bridge, a bridge supported by lattice girders, or latticework trusses. -- Lattice girder (Arch.), a girder of which the wed consists of diagonal pieces crossing each other in the manner of latticework. -- Lat…

A horizontal piece of timber secured to the uprights and supporting floor timbers, a staircase, scaffolding, or the like. It differs from an intertie in being intended to carry weight. [Written also ligger.] Ledger bait, fishing bait attached to a floating line fastened to the bank of a stream, pond, etc. Walton. J. H.…

A string-course or horizontal suit of moldings, such as the base moldings of a building. Oxf. Gloss.

A horizontal line or plane; that is, a straight line or a plane which is tangent to a true level at a given point and hence parallel to the horizon at that point; -- this is the apparent level at the given point.

The art or operation of using a leveling instrument for finding a horizontal line, for ascertaining the differences of level between different points of the earth's surface included in a survey, for establishing grades, etc., as in finding the descent of a river, or locating a line of railroad. Leveling instrument. See…

To rest extended on the ground, a bed, or any support; to be, or to put one's self, in an horizontal position, or nearly so; to be prostate; to be stretched out; -- often with down, when predicated of living creatures; as, the book lies on the table; the snow lies on the roof; he lies in his coffin. The watchful travel…

form of a vessel as shown by the outlines of vertical, horizontal, and obique sections.

A horizontal member spanning an opening, and carrying the superincumbent weight by means of its strength in resisting crosswise fracture.

of Lie, to be supported horizontally. Lying panel (Arch.), a panel in which the grain of the wood is horizontal. [R.] -- Lying to (Naut.), having the sails so disposed as to counteract each other.

A short, straight, horizontal mark [-], placed over vowels to denote that they are to be pronounced with a long sound; as, a, in dame; e, in seam, etc.