blow·hole 
/ˈbloʊˌhoʊl/ noun
plural blow·holes /ˈbloʊˌhoʊl/ noun [count] 1 : a hole that is on the top of a whale or related animal's head and is used by the animal for breathing 2 : a hole in the ice to which seals and other animals that are living in the water under the ice come to breathe
