noun
mine tunnel; mine shaft
Technical term for a horizontal or inclined underground passage in a mine. Rare in everyday language; mainly encountered in mining contexts.
この鋪は金鉱山の主要な坑道の一つだ。
This mine tunnel is one of the main passages in the gold mine.
坑道 is the common word for a mine tunnel or gallery; 鋪 is a rare, specialized synonym.
The character 鋪 originally meant 'shop' or 'spread out', but its use for 'mine tunnel' is a specialized Japanese mining term. The exact derivation is uncertain.