Greek word
speîra
σπεῖρα
What it means
a coil, i.e. a mass of men (a Roman military cohort
a coil (spira, "spire"), i.e. (figuratively) a mass of men (a Roman military cohort; also (by analogy) a squad of Levitical janitors)
Where it comes from
of immediate Latin origin, but ultimately a derivative of hairéomai (αἱρέομαι) in the sense of its cognate heilíssō (εἱλίσσω)