A thick plank, used for several mechanical purposes; especially:

A plank to receive the mouth of a petard, with which it is applied to anything intended to be broken down.

A plank or beam used for supporting the earth in mines or fortifications.

Origin: F, from Sp. Madero, or Pg. Madeiro, fr. Sp. Madera wood for building, timber, Pg. Madeira, L. Materia stuff, materials, lumber. See Matter.

(01 Mar 1998)

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