oscillum.
small face; (mask hung on trees); small mouth (in a seed); swing; (Cal);
Meaning & usage
a little cavity in the middle of leguminous fruits, where the germ sprouts forth
a little mask of Bacchus, hung from trees, so as to be easily moved by the wind
Where this word comes from
A double diminutive from ōs (“mouth; face”), analyzable as ōs + -culum + -lum or as ōsculum (“little mouth”) (mostly attested in the derived sense 'kiss') + -lum.
swing (apparatus)
Where this word comes from
Traditionally taken as a nominal formation from obs- + an element *cillō (“to move”) + -um, the main semantic component of unknown origin. Whether the word decomposition into the above elements is even correct is also implicitly doubted by Ernout and Meillet. Note also similarities to vacillō (“to sway, waver”), also of unclear origin, as well as vague resemblance to celer (“fast, quick”). Other theories identify ōscillum as a diminutive of ōs (“mouth”), as Bacchanal masks (resembling little mouths) would supposedly be hung from trees and swayed by the wind on them. This appears to be folk-etymological, however.
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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.