συστροφή G4963
systrophḗ · soos-trof-ay' · Noun Feminine
from συστρέφω; a twisting together, i.e. (figuratively) a secret coalition, riotous crowd:--+ band together, concourse.
2 Occurrences in the King James Bible
Acts 19:40For we are in danger to be called in question for this day’s uproar, there being no cause whereby we may give an account of this concourse.
Acts 23:12And when it was day, certain of the Jews banded together, and bound themselves under a curse, saying that they would neither eat nor drink till they had killed Paul.