flight lustre noun a mythical substance for which new recruits in the Canadian Air Force are sent to search CANADA
“Flight Lustre” [during 1950s and ’60s] was one of many useful but mythical substances that have caused embarrassment to apprentices. Others include Propwash, Relative Bearing Grease, Skyhook. — Tom Langeste, WordsontheWing, p. 104, 1995