Top definition
A die hard rock climbing enthusiast. Spends a significant number of days each year outside climbing, and often climbs in the off season when it's too cold for casual climbers. Sees climbing as more of a lifestyle than a hobby.
It was 40 degrees and windy in Yosemite Valley, but a few rock rats were already high up on the granite by 9am.
by RopedInTunedOut July 30, 2009
Get the mug
Get a Rock Rat mug for your cat Manley.