An Etymological Dictionary of the German Language/Köcher
Köcher, m., ‘quiver,’ from MidHG. kocher, OHG. chohhar, m., ‘quiver,’ yet also generally ‘receptacle’ with the variants, MidHG. kochœre, OHG. chohhâri, MidHG. koger, keger, with an abnormal g apparently in harmony with the obscure OIc. kǫgurr ‘quiver’?), preserved only in kǫgursweinn, kǫgurbarn; OIc. kǫgurr, ‘quilted counterpane, coverlet,’ is an entirely different word, and is connected with a remarkable G. form Köcher, ‘cover.’ AS. cocur, MidE. coker, ‘quiver’; also in MidE. and E. quiver, from OFr. cuivre, which is again derived from the Teut. word (Teut. kokro-, whence MidLat. cucurum, ‘quiver’).