Abbott-Smith Manual Greek Lexicon
σημαίνω (G4591)
6 σημαίνω ( σῆμα , a sign), [in LXX for רוּעַ hi., תָּקַע , etc. ;] to give a sign, signify, indicate : c. acc. rei, Ac 25:27 , Re 1:1 (cf. MM, xxii); c. acc. et inf., Ac 11:28 ; seq. quæst. indir., Jo 12:33 18:32 21:19 .†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain