www.alphadictionary.com

to march off in a line.

from French, but is derived from the verb "défiler," formed by combining "de-" with "filer" ("to move in a column"). "Défiler" is also the source of the English noun "defile," which means "narrow passage or gorge."

Our more common "defile", to contaminate, comes from
French, also: defouler (with accents, etc.etc.) meaning
to trample on, or mistreat.

An excellent three-fer in this suggestion. A nice challenge for the Good Dr. Can he fit them all into one post?

Will we let him cheat and just toss in a link to Gorgeous?