Английский разговорный словарь (основной) - echelon

ˈeʃəlɔn n. & v. --n. 1 a level or rank in an organization, in society, etc.; those occupying it (often in pl. : the upper echelons). 2 Mil. a formation of troops, ships, aircraft, etc., in parallel rows with the end of each row projecting further than the one in front (in echelon). --v.tr. arrange in an echelon. [F ÷chelon f. ÷chelle ladder f. L scala]