Definition of rock-hard in English:

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Entry from British & World English dictionary


1Extremely hard or solid: rock-hard shafts of ice six-pack abs and rock-hard pecs
More example sentences
  • They are sealed between two sheets of thick, rock-hard plastic.
  • Hiking up her top layers, she stashes a pair of goggles against her rock-hard tummy.
  • You're guaranteed a custom-made workout perfect for sculpting a rock-hard midsection in record time.
1.1Unlikely to change, fail, or collapse: her rock-hard relationship with Vic
More example sentences
  • This is a man of absolute rock-hard integrity.
  • Until someone comes up with rock-hard evidence, we ought to refuse them.
  • "That's pretty rock-hard evidence," Judge Hannah commented.
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