Lexical Definition

‎φάραγξ‎ pháranx (far'-anx) valley ^G:N-F
properly, strengthened from the base of ‎πέραν‎ or rather of ‎ῥήγνυμι‎

valley.

• a gap or chasm, i.e. ravine (winter-torrent)

Abbott-Smith

φάραγξ, -αγγος, ἡ [in LXX chiefly for נַחַל, also for גַּיְא, etc. ;]
a chasm, ravine: Lk 3:5 (LXX) (v. DB, iv, 845 f.).†

Abbott-Smith References

Liddell-Scott-Jones

φάραγξ [ᾰ], αγγος, ἡ,

cleft, chasm, especially in a mountain side, ravine, gully, [Refs 7th c.BC+], etc.; πᾶσα φ. πληρωθήσεται [LXX+5th c.BC+]of the cave, [Refs 5th c.BC+]; φάραγγα δακτύλου πιάσματι σύρει, of shaping a roll before it is baked, [Refs 5th c.BC+]

__II metaphorically, of the anus, [Refs 3rd c.BC+]

_{LSJ Scripture Refs: LXX.Isa.40.4}