The story
- Old English · inherited frominblāwan“to inspire, breathe upon, inflate, puff up”
- Middle English · inherited frominblowen
- English todayinblow
From Middle English inblowen, from Old English inblāwan (“to inspire, breathe upon, inflate, puff up”), equivalent to in- + blow. Doublet of inflate.
Etymology from Wiktionary, CC BY-SA 4.0.