underlay

Meaning

noun

1. a pad placed under a carpet

verb

1. 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”

Synonyms for underlay

• carpet pad
• rug pad
• underlayment