The Trisula (Trishula) is the Indian equivalent of a Trident and probably its predecessor. The two outer prongs are sometimes seen as feminine (cf. yoni), while the central prong is seen as masculine (cf. linga). In basic shape there are striking parallels between the trisula and the lyre (q.v.) or harp of David. Shiva holds a: {tri-zUla} , or three-pronged trident [also called Pinaka] in his hand to denote , as some think , his combination of the three attributes of Creator , Destroyer , and Regenerator Cologne Sanskrit Dictionary under ziva trishula, the trident of love, wisdom and action http://www.indiadivine.org/audarya/hinduism/447803-lord-shiva-sarvam-shiva-mayam.html