1.
If you ~ or stretch yourself out, you lie with your legs and body in a straight line.
The jacuzzi was too small to ~ in...
Moira stretched herself out on the lower bench.
PHRASAL VERB: V P adv/prep, V pron-refl P prep/adv, also V P
2.
If you ~ a part of your body, you hold it out straight.
He was about to ~ his hand to grab me.
PHRASAL VERB: V P n (not pron), also V n P