What is another word for air hole?
Pronunciation: [ˈe͡ə hˈə͡ʊl] (IPA) 
Air hole is a term with various synonyms that describe an opening that allows air to flow freely. Some of these include vent, aperture, vent hole, breathing hole, blowhole, orifice, porthole, air passage, and air vent. Each of these terms highlights a particular aspect of the opening, such as its size, purpose, or location. For example, a porthole is a small window-like opening on a ship, while a blowhole is a natural opening on the top of some marine animals used to release air. No matter which of these synonyms you use, they all refer to an essential aspect of ventilation and airflow that is crucial for maintaining a healthy environment.
