autoblock noun 2verb 2forms 3 noun2 •(An) automatic blocking (inhibition of a feature etc.).From the online vendor documentation, we determined that this version of the WatchGuard Firebox enabled an autoblock feature by default. — 2004 •A technique used in rappelling and ascending, with a friction hitch around the climbing rope. verb2 •To automatically block. •To use the autoblock technique. formsautoblocked · autoblocking · autoblocks