Blǽst

According to the Old English Dictionary:

es;

blǽst

m. [bláwan to blow; flare] A blowing, BLAST or gust of wind, a breeze; flatus :-- Sǽgrundas súþwind fornam, bæþweges blǽst the south wind, the sea breeze, dried up the depths of the sea, Cd. 158; Th. 196, 11; Exod. 290. [Chauc. blast: Laym. blæst: Ger. M. H. Ger. blast, m: O. H. Ger. blást, m: Icel. blástr, m.] blæst