The floor structure supporting and underlying the visible flooring or other finishing surface such as a carpet
A soft floor covering that lies under a carpet.
A piece of paper pasted under woodcuts, stereotype plates, etc. in a form, to bring them up to the necessary level for printing.
Lyrics; or more specifically, the way in which lyrics are assigned to musical notes.
Anything that is underlaid.
A layer (of earth, etc.) that lies under another; substratum.
To lay (something) underneath something else; to put under.
To put a tap on (a shoe).
simple past tense of underlie
To provide a support for something; to raise or support by something laid under.
To incline from the vertical.