Adjective
rock-like (comparative more rock-like, superlative most rock-like)
(of a material or substance) Similar to rock.
Precisely because Marx was convinced that the cause of the proletariat was of decisive importance for the whole future of mankind, he wanted to create for that cause not a flimsy platform of rhetorical invective or wishful thinking, but the rock-like foundation of scientific truth. Ernest Mandel
Deep down within the heart there is a stillness which is healing, a trust in the universal laws which is unwavering, and a strength which is rock-like. But because it is so deep we need both patience and perseverance when digging for it. Paul Brunton
Fantastic Four 600 (January 2012) * The Thing (Ben Grimm), Reed Richards' college roommate and best friend, has been transformed into a monstrous, craggy humanoid with orange, rock-like skin and super-strength. Source: Internet
Parker gained rock-like skin as a self-proclaimed "rock man", and is the dim-witted muscle of the team. Source: Internet