Underlay Definition
 ŭndər-lā 
  underlaid, underlain, underlaying, underlays
  
    verb
  
 
    underlaid, underlaying, underlays
  
To cover, line, or extend over the bottom of.
 The leather is underlaid with felt.
 Webster's New World 
To put (one thing) under another.
 American Heritage 
To provide with an underlay.
 Webster's New World 
To raise or support with something laid underneath.
 The roof must be underlaid with trusses.
 Webster's New World 
Webster's New World 
    noun
  
 
    underlays
  
Something laid underneath.
 Webster's New World 
Paper or other material used to underlay.
 American Heritage 
A patch or patches of paper laid under type, cuts, etc. to raise the level of the face.
 Webster's New World 
A layer (of earth, etc.) that lies under another; substratum.
Wiktionary 
Anything that is underlaid.
 Wiktionary 
Synonyms: 
  - rug pad
 - underlayment
 - carpet pad
 
Other Word Forms of Underlay
Noun
Singular:
 underlayPlural:
 underlaysUnderlay Is Also Mentioned In
Find Similar Words
Find similar words to underlay using the buttons below.