Hardest rock Synonyms

Hardest replaced

Synonyms for phrase

HR abbreviation

HR is an abbreviation for Hardest Rock
What does HR stand for?
HR stands for "Hardest Rock"

Rock replaced

Definitions for Rock


  • (noun) a usually valuable stone cut and polished for ornament
  • (verb) to make a series of unsteady side -to-side motions
  • (verb) to swing unsteadily back and forth or from side to side