From Middle English bale, from Old English bealo, from Proto-Germanic *balwą. Cognate with Low German bal- ("bad, ill"), Gothic 𐌱𐌰𐌻𐍅𐌴𐌹𐌽𐍃 ("torture"), Old High German balo ("destruction"), Old Norse bǫl ("disaster").
From Middle English bale, from Old English bǣl ("pyre, funeral pyre"), from Proto-Germanic *bēlą ("pyre"), from Proto-Indo-European *bʰel- ("to shine; gleam; sparkle"). Cognate with Old Norse bál (which may have been the direct source for the English word).
From Middle English bale, from Old French bale and Medieval Latin bala, of Germanic origin. ball.