ppl. a. (UN-1 8.)
1843. in T. J. Dyke, Addr. Public Medicine (1885), 2. The unmetalled and unchannelled highways and streets.
1862. Patterson, Ess. Hist. & Art, 211. The continuation of this road … is unmetalled.
1897. Trans. Roy. Hist. Soc., XI. 72. The balks … seem to be … unmetalled roadways.
