1.
If you stretch out or stretch yourself out , you lie with your legs and body in a straight line.
The jacuzzi was too small to stretch out 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 stretch out a part of your body, you hold it out straight.
He was about to stretch out his hand to grab me.
PHRASAL VERB : V P n (not pron) , also V n P