Also means
blister (on skin)
Usage Note
Ampoule covers both an electric light bulb (ampoule électrique) and a fluid-filled blister on skin. In pharmacy it also refers to a sealed glass vial (ampoule injectable). The two senses are quite distinct in context but share the underlying image of a small, sealed bubble or vessel.
Examples
"L'ampoule du couloir a grillé cette nuit."
Natural Translation
The hallway light bulb blew last night.
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