Definition of "blow it" [blow it]

• To fail at something; to mess up; to make a mistake. (verb)

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• "First came the anti-G suit that resembled a pair of zippered chaps and also served as backup flotation gear should you want to blow it up in the water."
• "But the pitch lacked the velocity Guidry needed to blow it by Rice, who swung and connected late, but by sheer strength seemed topush a low line drive into center field."
• "We could not go to her home with projection equipment or take her to a government facility with projection equipment and stop-frame that film and blow it up and give her a decent look."