colliery UK /ˈkɒl.jə.ɹi/US /ˈkɑl.jɚ.ɪ/ noun2 •(UK) An underground coal mine, together with its surface buildings.From the hillock a score of red paths diverged as black ones do from a colliery, one of them leading to the homestead itself […] — 1938 •(US) A facility that supplies coal. formscollieries