Liddell-Scott-Jones

ῥάχις (rhachis) a spine ^G:N-F

ῥάχις-ις, ιος,

Attic dialect εως, ἡ (but ὁ [Refs], the lower part of the back, the chine, συὸς ῥ. [Refs 8th c.BC+]

__2 spine or backbone, σύγκειται ἡ ῥ. ἐκ σφονδύλων, τείνει δ᾽ ἀπὸ τῆς κεφαλῆς μέχρι πρὸς τὰ ἰσχία [Refs 4th c.BC+]; ὑπὸ ῥάχιν παγέντες impaled, [Refs 5th c.BC+]; μυελὸς κοίλης ῥάχεως Archel. cited in [Refs 5th c.BC+]
__II anything ridged like the backbone:
__II.1 ridge of a hill or mountain, [Refs 5th c.BC+]; ἂν ῥάχιν along the ridge, [Refs 2nd c.BC+]; so [Refs 7th c.BC+]
__II.2 ῥ. ῥινός bridge of the nose, [Refs 2nd c.AD+]
__II.3 ῥ. φύλλου mid-rib of a leaf, [Refs 4th c.BC+]
__II.4 the sharp projection on the middle of the shoulder-blade, [Refs 2nd c.AD+]
__II.5 outer edge of the arm of the polypus, [Refs 4th c.BC+]
__II.6 trunk, of Dagon, [LXX]

_{LSJ Scripture Refs: LXX.1Kgs.5.4*}