The upper portion of the pavement, consisting of the wearing course and (if it exists) the base course, through which traffic loads are transmitted to the base, sub-base and sub-grade. Found on http://www.encyclo.co.uk/visitor-contributions.php
the action or process of giving a finished surface to something. · the material with which something is surfaced. · the act or an instance of rising to the surface of a body of water. Found on https://www.infoplease.com/dictionary/surfacing