underlay

American Heritage® Dictionary of the English Language, Fourth Edition

1. v. To put (one thing) under another.
2. v. To provide with a base or support.
3. v. Printing To raise or support (the level of a bed) by inserting a piece of paper or other material under the type.
4. n. Something, such as felt under a carpet, that is underlaid. Also called underlayment.
5. n. Printing Paper or other material used to underlay.
6. v. Past tense of underlie.

Century Dictionary and Cyclopedia

1. To lay beneath; put under; specifically, in printing, to reinforce with underlays.
2. To support by laying something under.
3. In mining, to incline from the perpendicular; hade: said of a vein. See the noun.
4. n. In mining, same as hade. The term underlay is that most commonly used by miners in speaking of the inclination of the lode; it is the complement of the dip, which latter term is in much more familiar use among geologists than either hade or underlay.
5. n. In printing, a bit or bits of paper put under types or a plate to make them of proper height for receiving a good impression.

Wiktionary

1. v. Simple past of underlie.
2. v. To lay something underneath something else
3. v. To provide a support for something
4. n. A layer (of earth, etc.) that lies under another; substratum.
5. n. A soft floor covering that lies under a carpet.
6. n. Anything that is underlaid
7. n. music Lyrics; or more specifically, the way in which lyrics are assigned to musical notes.

GNU Webster's 1913

1. v. To lay beneath; to put under.
2. v. To raise or support by something laid under. See Underlay, n., 2.
3. v. Prov. Eng. To put a tap on (a shoe).
4. v. (Mining) To incline from the vertical; to hade; -- said of a vein, fault, or lode.
5. n. (Mining) The inclination of a vein, fault, or lode from the vertical; a hade; -- called also underlie.
6. n. (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.

WordNet 3.0

1. v. put (something) under or beneath
2. n. a pad placed under a carpet
3. v. raise or support (the level of printing) by inserting a piece of paper or cardboard under the type
4. v. provide with a base, support, lining, or backing