From Mountain/Dirt Biking. Irregularly shaped rocks about 3 to 6 inches in diameter. Too big to roll over easily like gravel and too large and unstable to balance on. Just smaller and less dangerous than the dreaded baby head.
Dude, I kept my shit together on that stretch of death cookies but I ate shit completely when I hit the baby heads!
by 6079 Smith W March 23, 2005
A big ass chunk of hard snow, which you must avoid or jib off when snowboarding.
"Theres heaps of death cookies on that run"
by Ben Sinclair October 30, 2003
A rather large nugget of snow/ice that is formed either by ski resort groomers or broken off of a cornice
dude that death cookie made me eat hard
by quazymoto March 21, 2008