G4475–ῥάπισμα–rhapisma

Thereupon some began to spit on Him, and to blindfold Him, while striking Him with their fists and crying, "Prove that you are a prophet." The officers too struck Him with open hands as they took Him in charge.

ῥαπίσμασιν rhapismasin “with the palms”

Upon His saying this, one of the officers standing by struck Him with his open hand, asking Him as he did so, "Is that the way you answer the High Priest?"

ῥάπισμα rhapisma “a blow with the palm”

Then they began to march up to Him, saying in a mocking voice, "Hail King of the Jews!" And they struck Him with the palms of their hands.

ῥαπίσματα. rhapismata “blows with the palm.”