WordReference Random House Unabridged Dictionary of American English © 2025
coal mine′, 
  1. Mininga mine or pit from which coal is obtained.
  • 1605–15
coal min′er. 
coal min′ing. 

'coal mine' also found in these entries (note: many are not synonyms or translations):

Forum discussions with the word(s) "coal mine" in the title:


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