Main Entry: ¹un·der·lay

Pronunciation: \-ˈlā\

Function: transitive verb

Inflected Form(s): un·der·laid \-ˈlād\; un·der·lay·ing

Date: before 12th century

1 : to cover, line, or traverse the bottom of : give support to on the underside or below
2 : to raise or support by something laid under