4. (Mech.)

Defn: A strain, or change of shape, of an elastic body, consisting of an extension in one direction, an equal compression in a perpendicular direction, with an unchanged magnitude in the third direction. Shear blade, one of the blades of shears or a shearing machine. — Shear hulk. See under Hulk. — Shear steel, a steel suitable for shears, scythes, and other cutting instruments, prepared from fagots of blistered steel by repeated heating, rolling, and tilting, to increase its malleability and fineness of texture.

SHEAR
Shear, v. i.

1. To deviate. See Sheer.

2. (Engin.)

Defn: To become more or less completely divided, as a body under the action of forces, by the sliding of two contiguous parts relatively to each other in a direction parallel to their plane of contact.

SHEARBILL
Shear"bill`, n. (Zoöl.)

Defn: The black skimmer. See Skimmer.

SHEARD
Sheard, n.

Defn: See Shard. [Obs.]