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| in·vert·ed 540 [ in vùrtəd fīv fáwrtee ] (plural in·vert·ed 540s) |
noun |
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snowboarding trick with 540-degree rotation: a snowboarding trick by which the rider approaches the wall of a U-shaped structure halfpipe riding forward, becomes airborne, and performs one and a half backward rotations followed by a front flip
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