Blowhole may refer to: Blowhole (anatomy), the hole at the top of a whale's or other cetacean's head Blowhole (geology), a hole at the inland end of a sea cave Kiama Blowhole in Kiama, Australia The Blow Hole, a marine passage between Minstrel and East Cracroft Islands in the Central Coast of British Columbia, Canada Blowhole Diversion Tunnel in Victoria, Australia A type of casting defect in metalworking
See also :Category:Blowholes