Wiktionary(0.00 / 0 votes)Rate this definition: Gordian knot(Noun) The legendary knot tied to a pole near the temple of Zeus in Gordium. Gordian knot(Noun) Any intricate and complex problem. Origin: From the name of a legendary knot tied to a pole near the temple of Zeus in Gordium. It was prophesied that whoever loosed the knot would become ruler of all Asia.