COTD: Crush a rock to make a harsh sound (5)

day 90 of an experiment in which i press the "random word" button on onelook and make a cryptic clue out of it.

day 89, day 88, day 87, day 86, day 85

weeks 9 to 12 (days 57 to 84)

weeks 5 to 8 (days 29 to 56)

weeks 1 to 4 (days 1 to 28)