Meaning

noun a small bottle that contains a drug (especially a sealed sterile container for injection by needle)

originThe noun is derived partly: * from Middle English fiole, phiole, phial (“small bowl or cup for liquids, etc.; flask”) [and other forms], from Middle French fiole, phiole [and other forms], and Old French fiole (modern French fiole), from Late Latin fiola, phiola, from Latin phiala (“broad, flat, shallow bowl or cup”), from Ancient Greek φιάλη (phiálē, “round and shallow bowl, pan, or saucer”),…

Etymology from Wiktionary, CC BY-SA 3.0