ἐπι-κρούω,
hammer in, ἧλον [[5th-6th c.BC: Aristophanes Comicus “Thesmophoriazusae” 1004, compare “IG” 22.463.64; τὸν ἵππον καὶ τὸν ἄνδρα τὸν -κρούοντα [prev. work]12.374.173; χθόνα βάκτροις] Refs] striking the ground.., [[ A. “Ag.” 202 (Lyric poetry)] Refs]; ἐ. τῇ χειρὶ τὸ ξίφος clap one's hand on one's sword, [[ 1st-2nd c.AD: Plutarchus Biographus et Philosophus “Pomp.” 58 ] Refs 1st c.AD+]: metaphorically, jeer at, εἴς τινα [[3rd c.BC: Macho Comicus cited in Ath. 13.579b. ] Refs 3rd c.BC+]
__II. ={ἐπικροτέω}[[ 4, LXX “Je.” 31 (48). 26. ] Refs]
__III. in Medicine texts, use percussion, [[ Aret. “SA” 1.6. ] Refs]