Definition of hard rocker in US English:

hard rocker

noun

US
  • 1Originally: a person who performs popular music with a fast, vigorous rhythm and a strong beat. In later use: a person who performs hard rock.

  • 2Originally: a piece of music with a pronounced rocking rhythm. In later use: a hard rock song.

Origin

1940s; earliest use found in New York Amsterdam Star-News. From hard + rocker, in later use after hard rock.

Pronunciation

hard rocker

/ˌhɑːd ˈrɒkə/