English dictionary
upover
Definitions, examples, synonyms and antonyms from WordNet 3.0.
adjective
-
Designating a method of shaft excavation by drifting to a point below, and then raising instead of sinking.
Source: webster1913
English dictionary
Definitions, examples, synonyms and antonyms from WordNet 3.0.
Designating a method of shaft excavation by drifting to a point below, and then raising instead of sinking.
Source: webster1913