dead-man's float

noun Swimming.

a prone floating position, used especially by beginning swimmers, with face downward, legs extended backward, and arms stretched forward.

Origin of dead-man's float

First recorded in 1945–50
Also called prone float.

Definition for prone float (2 of 2)

prone float

noun Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019