Noun
a cord that is pulled to open a parachute from its pack during a descent
a cord that is pulled to open the gasbag of a balloon wide enough to release gas and so causes the balloon to descend
Source: WordNetHe had been dazed for far too long before grappling with his ripcord. Source: Internet
Pull ripcord at 6,000 feet. Source: Internet
Unfortunately, pulling the ripcord here and floating out of the frame is not a practical response. Source: Internet