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Webster 1913 Edition

Noun.

[F.

ailette

, dim. of

aile

wing, L.

ala

A small square shield, formerly worn on the shoulders of knights, – being the prototype of the modern epaulet.

Fairholt.

ailette ‎(plural ailettes)

A small square shield, formerly worn on the shoulders of knights, being the prototype of the epaulet.
(Can we find and add a quotation of Fairholt to this entry?)

aile +‎ -ette

ailette f ‎(plural ailettes)