Answer:

airhole

Answer	Crossword Clue
AIRHOLE	Unfrozen spot on a frozen pond
AIRHOLE	Ventilation source
AIRHOLE	Pet carrier feature

AIRHOLE	Vent
AIRHOLE	Ice opening
AIRHOLE	Pet-carrier vent
AIRHOLE	Pet-carrier feature
AIRHOLE	Helmet feature
AIRHOLE	Open space on a frozen lake.
AIRHOLE	Winter fisherman's spot.
AIRHOLE	Fishing spot of a sort.

AIRHOLE	Open place in the ice.
AIRHOLE	Vent.
AIRHOLE	Water not frozen over.
AIRHOLE	Whale's spouter.
AIRHOLE	Whale feature
AIRHOLE	Aperture for ventilation
AIRHOLE	Where the polar bear waits
AIRHOLE	Opening in the ice

AIRHOLE	Breathing aid
AIRHOLE	Site for a seal, maybe
AIRHOLE	Seal's opening?
AIRHOLE	Opening for breathing
AIRHOLE	Ventilation opening
AIRHOLE	Hamster ball feature
AIRHOLE	Opening in a pet carrier