Definition of rock-hard in English:

rock-hard

Line breaks: rock-hard

Entry from British & World English dictionary

adjective

1Extremely hard or solid: rock-hard shafts of ice six-pack abs and rock-hard pecs
1.1Unlikely to change, fail, or collapse: her rock-hard relationship with Vic

Definition of rock-hard in:

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Word of the day glee
Pronunciation: glē
noun
great delight