There will be areas of pure lead, with an air hole here and there.
The girls are through the ice—an air hole I guess—come on back!
Epworth dropped down as silently as possible from the air hole.
If the air hole should get uncovered there would be a tragedy!
Near the middle of the lake there was an air hole through which warm air rose to the surface, and there the ice was never thick.
One horse made for the shore, the other plunged into an air hole in the ice.
Richard Travis thrust his rifle barrel through the air hole and aimed carefully.
If it burns back into the air hole, also turn off the gas and begin again.
Usually a cap is placed over the air hole while the gas is being ignited.
He could wait for what he wished as the Eskimo sits for days at the air hole until the seal appears.