oscillum

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.

• (Classical Latin) IPA^(key): [oːsˈkɪl.lũː]
• (modern Italianate Ecclesiastical) IPA^(key): [oʃˈʃil.lum]

ōscillum n (genitive ōscillī); second declension

1. a little cavity in the middle of leguminous fruits, where the germ sprouts forth
2. a little mask of Bacchus, hung from trees, so as to be easily moved by the wind

Second-declension noun (neuter).

• ōscillō

obs- +‎ cillō (“to move”). See ōscillō (“to swing”) for more.

• (Classical Latin) IPA^(key): [ɔsˈkɪl.lũː]
• (modern Italianate Ecclesiastical) IPA^(key): [oʃˈʃil.lum]

oscillum n (genitive oscillī); second declension

1. swing (apparatus)

Second-declension noun (neuter).

• oscillō (“to swing”)

• “oscillum”, in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
• oscillum in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette.