blowhole Get Printable Handwriting (blow-hole) 2 syllables Learn It! Spelling Test Definition noun. 1 a nostril in the top of the head of a whale or dolphin or porpoise. It is used to breathe. Example Sentence Whales breathe through their blowhole. Synonyms nostril in the top of head; used to breathe; vent Antonyms mouth Share with your friends:
