1. a nostril of a whale, dolphin, or other marine mammal, located on top of the head
2. a hole in ice through which seals and other marine animals breathe
3. a vent or opening in rock formations where air or water is forced out by pressure
Usage: geological

Examples

• The whale surfaced and expelled water through its blowhole.
• Dolphins must come to the surface regularly to breathe through their blowholes.
• The seal found a blowhole in the ice to get air.
• Arctic animals depend on blowholes to survive under the frozen surface.
• The coastal blowhole shot water high into the air as waves crashed below.
• Tourists gathered to watch the spectacular blowhole eruption.
• The rocky blowhole created a natural fountain during high tide.