| v. t. | 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 (a shoe). |
| v. i. | 1. | (Mining) To incline from the vertical; to hade; - said of a vein, fault, or lode. |
| n. | 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 form, 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. |