es·ca·drille 
(ĕskə-drĭl′, -drē′)
(ĕskə-drĭl′, -drē′)n.
A unit of a European air command, as in France during World War I, typically containing ten or more aircraft.
[French, from Spanish escuadrilla, diminutive of escuadra, squadron, from escuadrar, to square off, from Vulgar Latin *exquadrāre; see SQUARE.]