Lexical Definition

‎ῥαπίζω‎ rhapízō (hrap-id'-zo) to slap ^G:V
from a derivative of a primary (to let fall, "rap")

smite (with the palm of the hand).

• to slap

Abbott-Smith

ῥαπίζω (< ῥαπίς, a rod), [in LXX: Jg 16:25, Ho 11:4, I Es 4:31 * ;]
1. prop., to strike with a rod.
2. In late writers, to strike (the face) with the palm of the hand: Mt 26:67; c. acc. pers., seq. εἰς τ. σιαγόνα, Mt 5:39 (cf. Field, Notes, 40, 105).†

Abbott-Smith References

Liddell-Scott-Jones

ῥαπίζω,

(ῥαπίς) strike with a stick, cudgel, thrash, τινα [LXX+6th c.BC+]passive, ῥ. ἐκ τῶν ἀγώνων to be flogged off the course, [Refs 5th c.BC+]: Ionic dialect perfect participle, ῥεραπισμένα νῶτα [Refs 6th c.BC+]

__II slap in the face (later for Attic dialect ἐπὶ κόρρης πατάξαι), ἐπὶ κόρρης ῥ. (metaphorically) [NT+1st c.AD+]:—passive, ῥαπισθῆναί τε καὶ πληγὰς λαβεῖν ἁπαλαῖσι χερσίν [Refs 4th c.BC+]; ῥαπίζειν distinguished from κολαφίζειν, [NT]
__III generally, strike, beat, [τὸν ἀέρα] [Refs 4th c.BC+]:—passive, [Refs 4th c.BC+]

_{LSJ Scripture Refs: LXX.Judg.16.25 ☩ Matt.5.39 ☩ Matt.26.67}