overmount adjective 1noun 1verb 1forms 3 adjective1 •Mounted over something else. noun1 •A piece of shaped cardboard used to prevent the glass of the frame from lying too closely upon an engraving or a picture. verb1 •To tower over; to go or rise higher than.the pretty purple ground-nut, which, despising its name, overmounts the tallest shrubs — 1845 formsovermounted · overmounting · overmounts