IPA: /ˈrɒklaɪk/
KK: /ˈrɑkˌlaɪk/
Having a hard, solid, or stony appearance or quality, similar to that of a rock.
The mountain had a rocklike texture that made it look unyielding.
Rocklike → It is formed from "rock" (from Old English *rocc*, meaning a solid mineral material) and "-like" (meaning resembling or similar to). The word "rocklike" means resembling or similar to a rock.
Think of something that is "similar to a rock" — that's what rocklike means.