Etymology From Middle English greve, from Old English grǣfe, grǣfa (“bush, bramble, grove, thicket, copse, brush-wood (for burning), fuel”), probably related to Proto-Germanic *grōbō (“ditch, hole”). Cognate with Scots greve, greave (“grove”). Compare also Proto-Germanic *grainiz (“twig”), of unknown origin, whence Old Norse grein (“branch, bough”). Closely related to Old English grāf, grāfa (“grove”). See grove.
she fled into that covert greave1596, Edmund Spenser, “Book VI, Canto II”, in The Faerie Queene. […], London: […] [John Wolfe] for William Ponsonbie, →OCLC:
Etymology From Middle English greve, greyve, from Old English grǣfa, grēfa (“pit, cave, hole, grave, trench”), from Proto-Germanic *grēbō, an ablaut variant of to *grōbō (“pit, ditch”) (whence doublet of groove) , from Proto-Indo-European *gʰrebʰ- (“to dig, scratch, scrape”). Cognate with North Frisian groop (“pit, sewer, gutter”), Dutch groef (“pit, hole, gutter”), German Grube (“pit, hole”), Icelandic gröf (“pit, grave”). Also related to grave.
Etymology From Middle English greve, grayve, from Old French greve (“shin”), of uncertain origin; possibly from Egyptian Arabic جورب (“stocking, leg cover”). Watkins suggests a connection with greve (“part in the hair”), due to the resemblance of the medial ridge to a part in the hair, from graver (“to part (the hair); engrave”), of Germanic origin, from Frankish *graban (“to engrave”); if so, related to Etymology 2 above.
1
Historical A piece of armour that protects the leg, especially the shin, and occasionally the tops of the feet.
And through the stained windows bright, / From o'er the red-tiled eaves, / The sunlight blazed with colored light / On golden helms and greaves.1883, Howard Pyle, The Merry Adventures of Robin Hood […], New York, N.Y.: […] Charles Scribner’s Sons […], →OCLC:
Then he cast off his breast-plate, thigh pieces, and greaves, while Alleyne followed his example.1891, A[rthur] Conan Doyle, The White Company, New York, N.Y.; Boston, Mass.: Thomas Y[oung] Crowell & Company […], →OCLC: