wearingcourse
nounUK /ˈwɛərɪŋ kɔːs/
US /ˈwɛrɪŋ kɔːrs/
The top layer of a road that cars drive on.
Workers laid a new wearing course on the highway to make the drive smoother.
RELATED WORDS
OTHER MEANINGS
2. The outer layer of a floor or path that takes the most wear.
The wearing course of the bridge deck was replaced after years of traffic.
3. A protective top coating applied to a surface to resist damage.
The engineer specified a durable wearing course for the airport runway.
4. In construction, the final layer placed over a base to bear traffic and weather.
The wearing course must be laid only after the base course has fully set.