From Longman Dictionary of Contemporary Englishstretch out phrasal verb1 informalLIE DOWN to lie down, usually in order to sleep or rest I’m just going to stretch out on the couch for ten minutes.2 stretch something ↔ outREACH to put out your hand, foot etc in order to reach something Jimmy stretched out his hand to take the candy. → stretch→ See Verb table
Examples from the Corpus
stretch out• I think I'll go upstairs and stretch out for a little while.• "I'm pooped, " said Homer, stretching out on his bunk. 