Deadman

A log or logs, heavy timber or timbers, a large block of concrete, a large boulder, or combination of the above that is partially or completely buried. Eyebolts placed in deadmen are used to anchor cables. Log or timber deadmen (without eyebolts) are used in log or timber retaining walls. They are placed perpendicular to the face of the wall, exten...
Found on http://www.americantrails.org/

DEADMAN

A log or rock buried in the ground to provide a solid point for anchoring a tent in ground too soft for stakes.
Found on http://www.liveoutdoors.com/recreation/167535-a-brief-glossary-of-camping-t

deadman

a log or rock buried in the ground to provide a solid point for anchoring a tent in ground that is too soft for stakes.
Found on http://camposaur.com/camping-glossary/

Deadman

When the ground is too soft to stake a tent, campers often bury large rocks or sticks tied to guy lines to pitch the tent safely. Deadman is the slang term for this process.
Found on https://www.eurekacamping.com/blog/article/20-camping-terms-you-should-know

Deadman

A safety device, commonly known as 'the deadman's handle', fitted to master controllers to ensure driver attention during driving in single-manned cabs. If the controller handle is released, the power is cut off and the emergency brake applied. More modern versions, referred to as a 'driver's safety device' or a 'vigilance device', often take the f...
Found on http://www.railway-technical.com/newglos.shtml

Deadman

A shortened version of "Deadman's Handle", the driver's vigilance device consisting of a sprung power controller handle which, when released, causes the train brakes to give an emergency application and to switch off traction power to the motors. London Underground has always used controller handles for the vigilance device rather than the pedals...
Found on http://www.trainweb.org/tubeprune/dictionary.htm

Deadman

Buried cross timbers, or a bulk of concrete or stone, to which are attached guy pieces of wood, or wire cable, to anchor an upright post or derrick nearby.
Found on http://www.selectstone.com/architectural-resources/stone-glossary/

Deadman

Any device (picket, shovel, bag of snow) buried in deep snow that provides an anchor.
Found on http://santiamalpineclub.org/mountain/climbing/terms/
No exact match found