ampoulettecommon nounSyllable DecompositionampouletteEtymologyexpandDefinitions1. Cylinder of willow, alder or linden, used to close the eye of a hollow projectile and to contain its fuse.militaireexpand2. The two small vials opposite each other by their opening, forming an hourglass used to measure the duration of half a minute.marineexpandPluralampoulettesSee alsoampoule (cn.) ampoulé (adj.) ampullaire (adj.)