Top Definition
is Scottish Gaelic for "seed of the gael"
An ultra nationalist cultural and fraternal organisation .
they want the break up of the union of the UK as it's biased toward the fucking english.
Siol call the union jack the "butcher's apron" as it's steeped in the blood of many nations including Scotland.
see that man from Siol Nan Gaidheal in the nice black T-shirt with the nice celtic knot on the front...he HATES the union!
by pax681 October 19, 2006

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