Sumerian dar, Akkadian tarru, the proximate etymon and culture word (also Hebrew and Ugaritic) better known from its large version, for which see s.v. trngl, trnglˀ/trnwlˀ etc.
The example in Nat claims that this insect-eating bird never relaxes its wings. Apparently here a type of "swallow" rather than the biblical "turtle dove", but the Samaritan and Syriac examples have here been joined in a single lemma.
For possible appearance in Iranian see Ciancaglini, ILS p. 268.