noting or pertaining to French Gothic architecture of the late 15th and early and middle 16th centuries, characterized by the use of flamboyant tracery, intricacy of detailing, virtuosity of workmanship, attenuation of parts, and frequent complication of interior space.
1832, first used of a 15c.-16c. architectural style with flame-like curves, from Fr. flamboyant "flaming, wavy," prp. of flamboyer "to flame," from O.Fr. flamboier, from flambe "flame." Extended sense of "showy, ornate" is 1879.