backpack(redirected from backpak)
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a pack carried on the back of an astronaut, containing oxygen cylinders, essential supplies, etc
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
A parachute pack attached to the parachute harness at the upper back of the wearer. A short term for backpack parachute.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved