1. To lay beneath; to put under.
2. To raise or support by something laid under; as, to underlay a cut, plate, or the like, for printing. See
Underlay, n., 2.
3. To put a tap on [Prov. Eng.]
(Un`der*lay"), v. i. (Mining) To incline from the vertical; to hade; said of a vein, fault, or
1. (Mining) The inclination of a vein, fault, or lode from the vertical; a hade; called also underlie.
2. (Print.) A thickness of paper, pasteboard, or the like, placed under a cut, or stereotype plate, or
under type, in the from, to bring it, or any part of it, to the proper height; also, something placed back
of a part of the tympan, so as to secure the right impression.