Flower de Luce. A corruption of fleur-de-lis (q.v.), more anciently written “floure delices, ” a corruption of fiordilisa, the white iris. The French messenger says to the Regent Bedford-
Cropped are the flower de luces in your arms; Of England's coat one-half is cut away.
referring of course to the loss of France. The luce or lucy is a full-grown pike. Thus Justice Shallow says- “The luce is the fresh fish, the salt fish is an old coat” —i.e. Lucy is a new name, the old one was Charlecote.
(Merry Wives of Windsor, i. l.) (See Fleurs-De-Lys.)
the full-grown pike, is the Latin luci-us, from the Greek lukos (a wolf), meaning the wolf of fishes.
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894