Macaulish from Braveheart?

It's just after the scene where William Wallace cuts the English bloke's throat who cut Wallace's wife's throat. Then the father of his friend repeats, "Macaulish," twice and then yells it, and then everyone starts chanting it. The chant goes from, "Macaulish!" to... show more It's just after the scene where William Wallace cuts the English bloke's throat who cut Wallace's wife's throat. Then the father of his friend repeats, "Macaulish," twice and then yells it, and then everyone starts chanting it. The chant goes from, "Macaulish!" to "Wallace!"

Who is Macaulish, or what does it mean?
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