O.E.
græs, gærs "herb, plant, grass," from P.Gmc.
grasan (cf. O.N., Ger., Goth.
gras), from PIE
*ghros- "young shoot, sprout," from base
*gro-/*gre- "that which grows" (cf. L.
gramen "grass"); related to
grow and
green. Sense of "marijuana" is first recorded 1938, Amer.Eng.
Grasshopper is O.E.
gærshoppa (cf. M.Swed.
gräshoppare, Ger.
gräshupfer); as a term of reproach, from Eccl. xii.5.
Grass widow (1528) was originally "discarded mistress" (cf. Ger.
Strohwitwe, lit. "straw-widow"), probably in allusion to casual bedding. Sense of "married woman whose husband is absent" is from 1846.
"[G]rasse wydowes ... be yet as seuerall as a barbours chayre and neuer take but one at onys." [More, 1528]