Meaning

verb breathe or blow onto as a ritual or sacramental act, especially so as to symbolize the action of the Holy Spirit

verb treat by blowing a powder or vapor into a bodily cavity

verb blow or breathe hard on or into

originFirst attested in 1670; borrowed from Latin īnsufflātus, perfect passive participle of īnsufflō (see -ate (verb-forming suffix)) from in- + sufflō (“to blow on”). Cognate with French insuffler.

Etymology from Wiktionary, CC BY-SA 3.0