a prone floating position, used especially by beginning swimmers, with face downward, legs extended backward, and arms stretched forward.
What’s The #’s Real Name?A hash has referred to stripes on military jackets since as early as 1910. But, in the 1980s, people started using hash to refer to the # symbol.
Origin of dead-man's float
First recorded in 1945–50
Also called prone float.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019