beartrap

Noun

 * 1)  A large trap used to catch a bear or other mammal, usually as a foot trap.
 * 2)  A radar trap used by police to catch speeders.
 * 3)  A device that traps a probe on a rotorcraft, securing it to the helicopter deck of a vessel.
 * 4)  A system of rotorcraft recovery aboard watercraft in heavy sea states, which uses the beartrap device to land securely and transport the aircraft into the hangar.