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1. A pad placed under a carpet
   - carpet pad, rug pad, underlayment

1. (printing) raise or support (the level of printing) by inserting a piece of paper or cardboard under the type
   "underlay the plate"
    
2. Put (something) under or beneath
   "They underlaid the shingles with roofing paper"
    
3. Provide with a base, support, lining, or backing
   "underlay the boards with joists"

1. Be or form the base for
    
2. Lie underneath

Derived forms: underlaid, underlays, underlaying

Type of: be, bring up, cater, elevate, get up, lay, lie, lift, pad, place, ply, pose, position, provide, put, raise, set, supply

Encyclopedia: Underlay