Liddell-Scott-Jones

ὄρυξ (orux) a gazelle ^G:N-M

ὄρυξ, ῠγος, ὁ

(ὄρυγξ [Refs 5th c.AD+], pickaxe or any sharp iron tool for digging, [Refs]

__II a kind of gazelle or antelope, in Egypt and Libya, so called from its pointed horns, beisa, Oryx leucoryx, described as μονόκερως, [LXX+4th c.BC+]
__II.2 ὄ. τετράκερως Indian four-horned antelope, Tetraceros quadricornis, [Refs]; also an Indian gazelle, [Refs]
__III a great fish, perhaps narwhal, Monodon monoceros, or a kind of whale, [Refs 1st c.BC+]

_{LSJ Scripture Refs: LXX.Deut.14.5}