n. - An arrangement of a body of troops when its divisions are drawn up in parallel lines each to the right or the left of the one in advance of it, like the steps of a ladder in position for climbing. Also used adjectively; as, echelon distance.
n. - An arrangement of a fleet in a wedge or V formation.
v. t. - To place in echelon; to station divisions of troops in echelon.
v. i. - To take position in echelon.