נָשַׁףnâshaph

blow

Pronunciation: naw-shaf' · Hebrew/Aramaic (Old Testament) · H5398

Meanings

Qal: he hath blow upon them (Isaiah 40:24; Exodus 15:10)

Same root

יַנְשׁוּףyanshûwph · H3244an unclean (acquatic) bird; probably the heron (perhaps from its blowing cry, or because the nightheron is meant ))
נֶשֶׁףnesheph · H5399properly, a breeze, i.e. (by implication) dusk (when the evening breeze prevails)

Where it appears

Appears 2 times in the Bible.

Exodus 15:10 But you blew with your breath, and the sea covered them. They sank like lead in the mighty waters.
Isaiah 40:24 They hardly get started, barely taking root, when he blows on them and they wither. The wind carries them off like chaff.

Source: Brown, Driver and Briggs, Hebrew and English Lexicon of the Old Testament (1906), public domain; markup by unfoldingWord, CC BY (github.com/unfoldingWord/Brown-Driver-Briggs-Enhanced).