brahmagranthi m. N. of the knot which ties together the 3 threads forming the sacred cord of a partic. joint of the body Cat The three cords are tied together by a knot called Brahma-granthi, which symbolises Brahma, Vishnu and Siva (the trinity of gods, Creator, Sustainer and Destroyer). Besides, extra knots are made in the cords to indicate the various Pravaras of a particular family. http://www.hinduism.co.za/sacred1.htm