DCHP-1 Online
frost boil 
a place in a paved road where the pavement has heaved as a result of the expansion of trapped moisture frozen during the cold weather.
- 1955 The worst outbreak of "frost boils" in history was reported today on Manitoba highways. . . .
- 1959 More layers of pavement will be laid in the spring after expected frost boils are repaired.
- 1966 We drove around the new town of Fort Fraser . . . the car clawing its way through the frost boils of the new streets.
- 1955 The worst outbreak of "frost boils" in history was reported today on Manitoba highways. . . .