Definition of hardrocker in US English:

hardrocker

noun

US
Mining
  • A miner engaged in or skilled at working hard (typically igneous or metamorphic) rock as distinct from coal or sedimentary deposits; a hard-rock miner. Also more generally: any labourer experienced in or capable of heavy work with rock.

Origin

Early 20th century; earliest use found in Daily Nevada State Journal. From hard + rock + -er, probably after hard rock.

Pronunciation

hardrocker

/ˈhɑːdrɒkə/