hardrock
nounUK /ˈhɑːd.rɒk/
US /ˈhɑːrd.rɑːk/
Hardrock is very strong rock that is hard to break.
The miners dug through hardrock to find gold.
OTHER MEANINGS
2. A style of loud, heavy rock music.
The band played hardrock all night long.
3. A type of mining that cuts into solid rock.
Hardrock mining is common in mountain areas.
4. A person who is very tough and does not give up.
She is hardrock when it comes to finishing her work.