From nasham; properly, a hard breather, i.e. The name of two unclean creatures, a lizard and a bird (both perhaps from changing color through their irascibility), probably the tree-toad and the water-hen -- mole, swan.
see HEBREW nasham
H8580. tinshemeth
תִּנְשֶׁ֫מֶת noun feminine an animal; — ׳ת Leviticus 11:18, תִּנְשָּׁ֑מֶת 11:30; Deuteronomy 14:16: —
1 unclean bird, the ibis, water-hen, ᵐ5. πορφυρίων, (accusative TristrNHB 249); or species of owl (Di Bu SS); pelican (Ges): Leviticus 11:18 = Deuteronomy 14:16.
2 unclean שֶׁרֶץ Leviticus 11:30, lizard (Saad TristrNHB 120), or chameleon (BoHieroz. i. 1078 ff.; ed. Rosenm. ii. 503 ff.), so most; (deriving name from alleged living on air, PlinNH viii. 51; but this not applicable to 1; compare LagBN 130 f.).