Trishula is female it is the name Babukishan gave me as my married name, this is tradition in Bengal for a husband to give his wife a name. Trishula is also Durga right before she turns into her Kali Rupa.
Tri is 3 (three) is a 3 pronged weapon.
Trishula also means protection.
Trishula the ultimate weapon the 3 Maha Shakti's Laxshmi, Parvathy, and Sarasvati..