Glæs

According to the Old English Dictionary:

es;

glæs

m. A glass vessel. (1) a glass for drinking:--Hé sende him glæs fulne wínes misit ei calicem uini, Bd. 5, 5; Sch. 572, 7. (2) a cupping-glass:--Teóh mid glæse on þá sculdru, Lch. ii. 262, 5. Hwílum þú teóh mid glæse oððe mid horne blód of þám sáran stówum, Lch. ii. 280, 23: 200, 13. Lǽt him blód þus; sete glæs on oððe horn, and teó ꝥ blód út, 232, 25: 206, 23. glæs