1. breathing holes on top of whales, dolphins, and other marine mammals
Usage: biology
2. holes or openings in coastal rocks through which water and air are forced by wave action
Usage: geology
3. air holes or vents in ice
Usage: geology

Examples

• The whale surfaced and expelled water through its blowholes.
• Dolphins breathe air through blowholes located on top of their heads.
• The coastal blowholes created spectacular water spouts during high tide.
• Tourists gathered to watch the dramatic display at the famous blowholes.
• Seals use blowholes in the ice to surface and breathe.
• The blowholes allowed trapped air to escape from beneath the frozen lake.
• Marine biologists studied how whales control their blowholes while diving.