type of globular ancient Roman bottle with a narrow neck, late 14c., from Latin ampulla (see ampoule, which is the same word come up through French).
Entries linking to ampulla
ampoule n.
"small bottle or flask," especially one used for holy liquids, c. 1200, from Old French ampole "flask, vial," from Latin ampulla "small globular flask or bottle," which is of uncertain origin, perhaps a contracted form of amphora. Superseded in English by the form ampulla and later ampul.