Strong's 4686 (σπεῖρα)

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band

a coil (spira, "spire"), i.e. (figuratively) a mass of men (a Roman military cohort; also (by analogy) a squad of Levitical janitors)

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of immediate Latin origin, but ultimately a derivative of G138 (αἱρέομαι) in the sense of its cognate G1507 (εἱλίσσω);