Æfter-rǽpe

According to the Old English Dictionary:

æfter-rǽpe

a crupper:--Æfterrǽpe postela, Wrt. Voc. i. 23, 15. Mid æfterrǽpum postelis, Hpt. 31, 14, 336. [O. H. Ger. after-reifi postelina.] Cf. æfter-ráp in Dict., where add: [O. H. Ger. after-reif postella]. æfter-ræpe