Hwóstan

According to the Old English Dictionary:

hwóstan

p. te To cough :-- Hwóstaþ [hwosaþ, MS.] gelóme they cough frequently, L. M. 2, 46; Lchdm. ii. 258, 7. [Prompt. Parv. hostyñ, or rowhyñ, or cowghyñ tussio, tussito: Scott. host, hoist to cough: Icel. hósta: Dan. hoste: O. H. Ger. huostón: Ger. husten.] hwostan