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Old English streccan, from Proto-Germanic *strakjanan (cf. Danish strække, Swedish sträcka, Old Frisian strekka, Old High German strecchan, Middle Low German, Middle Dutch, Old High German, German strecken "to stretch"), perhaps a variant of the root of stark, or else from PIE root *strenk- "tight, narrow; pull tight, twist" (see strain).
Meaning "to extend (the limbs or wings)" is from c.1200; that of "to lay out for burial" is from early 13c. To stretch one's legs "take a walk" is from c.1600. Meaning "to lengthen by force" first recorded late 14c.; figurative sense of "to enlarge beyond proper limits, exaggerate," is from 1550s. Stretch limo first attested 1973. Stretch marks is attested from 1960. Stretcher "canvas frame for carrying the sick or wounded" is first attested 1845.
1540s, "act of stretching," from stretch (v.); meaning "unbroken continuance of some activity" is first recorded 1680s; meaning "straightaway of a race course" (e.g. home stretch) is recorded from 1841.
Suffering from nervous stress: I'm sorry. I'm just very stressed/ He had to take a two-week leave because he was completely stressed out (1980s+)