The term SPIRACLE refers to a small opening or hole in an organism that allows air to enter and exit the body. The two crossword solutions for this term are VENT, which is a four-letter word, and BLOWHOLE, which is an eight-letter word. VENT is a general term used to describe an opening that allows air to pass through, while BLOWHOLE specifically refers to the nostril of a cetacean, such as a whale or dolphin.