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miter box[′mīd·ər ‚bäks]
A troughlike device of metal or wood with vertical slots set at various angles in the upright sides, for guiding a handsaw in making a miter joint.
A device used for guiding a handsaw at the proper angle for cutting a miter joint in a piece of wood. Can be made of wood, using precut slots on the sides to hold the saw, or metal, which has an adjustable carriage to change the angle of the miter.
A device for guiding a handsaw at the proper angle in making a miter joint; often a narrow wooden box having a bottom and two sides in which kerfs are cut (usually at an angle of 45°) for guiding the saw.