Rotate face-up, as one's palm, 8 letters
Rotate palm-upward, 8 letters
Back down?, 6 letters
Back-up, 6 letters
Belly up, 6 letters
Face up, 6 letters
Face upward, 6 letters
Facing upward, 6 letters
Flat on one's back, 6 letters
In a sleeping position, 6 letters
In the backstroke position, 6 letters
Inactive, 6 letters
Laid out, 6 letters
Lethargic, 6 letters
Like a luge rider, 6 letters
Like a luger's position, 6 letters
Like lugers, 6 letters
Lying face up, 6 letters
Lying face-upward, 6 letters
Lying on one's back, 6 letters
Not prone, 6 letters
On one's back, 6 letters
Prone, 6 letters
Recumbant, 6 letters
Rotation of the hands and forearms so that the palms face upward, 10 letters