1. underlay - Noun
2. underlay - Verb
Derived from underlie
To lay beneath; to put under.
To raise or support by something laid under; as, to underlay a cut, plate, or the like, for printing. See Underlay, n., 2.
To put a tap on (a shoe).
To incline from the vertical; to hade; -- said of a vein, fault, or lode.
The inclination of a vein, fault, or lode from the vertical; a hade; -- called also underlie.
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.
Source: Webster's dictionaryVery few of the heroes of the Golden Age of American finance had much interest in the solid realities of what underlay their structure of stocks and bonds and credits . Robert Heilbroner
I didn't know what made things tick. I didn't know what made people want to be friends. I didn't know what made people attractive to one another. I didn't know what underlay social interactions. Ted Bundy
The worldview that underlay the New Testament was so different from that of the Greeks and the Romans as to be almost its opposite. It was a worldview that stressed not excellence of public achievement but the adventure of a personal journey with God... by imitating God's justice and mercy. Thomas Cahill
underlay the boards with joists Source: Internet
They underlaid the shingles with roofing paper Source: Internet
underlay the plate Source: Internet