bulla.
bubble; boss/knob/stud; locket/amulet (usu. gold) hung round necks of boys; Papal bull; Papal document; stamped lead seal of Papal document;
Meaning & usage
a bubble
a swollen or bubble-shaped object a knob, boss, or stud, as on doors, shields, etc.
a swollen or bubble-shaped object a bulla: a protective (usually golden) amulet worn by upper-class Roman children
a swollen or bubble-shaped object a round metallic seal certifying official medieval documents, particularly the golden imperial seal and the leaden papal one.
a papal bull or other official document sealed with a bulla
Where this word comes from
Uncertain; possibly from Gaulish [Term?], from Proto-Indo-European *bew- (“swelling”), same source as Middle Dutch puyl (“bag”) and Lithuanian bule (“buttocks”), or from *bʰel- (“to blow, to swell up”). Ultimately onomatopoeic, similar to Ancient Greek βολβός (bolbós, “bulb”).
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.