trap door

These bladders create an internal vacuum and are closed by a special 'trap door'.

During her final Guts tour stop at the Rod Laver Arena, Rodrigo was running across the stage, pointing to cheering fans, when she dropped through a trap door.

Mr Gilliver moves towards the camera, swooshing his light sabre before disappearing down the trap door.

Flat listless performances against Stoke, Bristol City and then Leeds clearly concentrated minds as the Championship's trap door drew closer.

They do have a trap door on the side so they can stretch out if needed.