French fly

noun

An internal button tab or waist stay extension attached to the waistband that fastens independently behind the main zipper or button closure.

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Meanings

nounFrench fly (plural French flies)

plural French flies

  1. tailoringAn internal button tab or waist stay extension attached to the waistband that fastens independently behind the main zipper or button closure.

Origin

Originated in France as an early style of breeches.

Full word history & related roots →
Cite this entry
APA

French fly. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/French%20fly

MLA

“French fly.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/French%20fly. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “French fly,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/French%20fly.

Source: French fly on Wiktionary, CC BY-SA 4.0.