spring open

He looked up suddenly as the door to his office sprang open.

"And two more are probably springing open as we're talking."

The door seemed to spring open in his hand.

The door of the tank sprang open, and he looked out.

He turned at last toward Reichert, only to see the other man's eyes suddenly spring open.

He took it from me and the back instantly sprang open.

Before he could leave his chair, the door sprang open.

The door of the booth sprang open; my ten minutes were up.

After the wings are through the hole they spring open inside the wall.

A door sprang open, and he was thrown to the floor.