Abbott-Smith Manual Greek Lexicon
τάραχος (G5017)
2 τάραχος , -ου, ὁ ( ταράσσω ), [in LXX for מְהוּמָה , etc. ;] later form of ταραχή (Xen., al.; v. Thackeray, Gr. , 159): Ac 12:18 19:23 .†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain