Geostra
Bosworth & Toller Anglo-Saxon Old English Dictionary - geostra
According to the Old English Dictionary:
giestra [estra, Ps. Spl. 89, 4] gystra, gyrsta;
- geostra
- adj. Of yesterday; hesternus :-- Geostran dæg dies hesterna, Ps. Th. 89, 4. Gioster doeg heri, Jn. Skt. Lind. 4, 52. Giestron yesterday, Exon. 111 a; Th. 424, 24; Rä. 41, 44. Gystran niht yesternight, Beo. Th. 2672; B. 1334. Gyrstan dæg heri, Jn. Bos. 4, 52: Th. An. 22, 1. [Laym. ȝerstendæi (o, u): Goth. gistra dagis to-morrow, with which meaning the Icel. i gör occurs, O. H. Ger. gestre, gesteren heri; gestren hesternum: Ger. gestern: Lat. heri, hesternus.] geostra