1. The battle of the frogs and mice, a mock heroic poem, possibly of the Homeric age.
2. Etymology: from Greek batrachos, "frog" + mys, "mouse" + machia, "fighting", a word related to English "might, machine", and "magic". Mys is of the same origin as Latin mus, from musculus, "a little mouse"; then it became French "muscle" and then it was adapted into English with the same meaning.