UNDERLAY
Un"der*lay`, n.
1. (Mining)
Defn: The inclination of a vein, fault, or lode from the vertical; a hade; — called also underlie.
2. (Print.)
Defn: 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.
UNDERLAYER
Un"der*lay`er, n.
1. One who, or that which, underlays or is underlaid; a lower layer.
2. (Mining)
Defn: A perpendicular shaft sunk to cut the lode at any required depth. Weale.
UNDERLEAF
Un"der*leaf`, n.