1
sand, ash, etc., thrown in the eyes to blind someone;throwing something at someone's eyes to blind them
2
eye poke (in combat sports);eye-gouging
See also:
サミング
「軽くならいいけど」「うむ、では金的と目潰しは有効にするか？」
"If it's a light workout, OK." "Right, so will we allow crotch-kicking and eyeball crushing?"
Other forms
目つぶし 【めつぶし】