O / obsĕro
verb transitive

obsĕro

2nd PP obsĕrāre · 3rd PP obsĕrāvi · 4th PP obsĕrātum · conj. 1st
to bolt, bar, fasten; shut up
to bolt, bar, fasten, or shut up (not in Cic. or Cæs.; syn.: claudo, oppilo, obstruo).
Lit.: ostium, Ter. Eun. 4, 6, 25: aedificia, Liv. 5, 41: fores (opp. aperire), Suet. Tit. 11: tabellam liminis, Cat. 32, 5: exitus, Col. 9, 1, 3: rogos, i. e. the dead, Prop. 4, 11, 8.—
to be silent by extension
Transf.: aures, Hor. Epod. 17, 53: palatum (for os), i. e. to be silent, Cat. 55, 21: fores amicitiae, Amm. 27, 12.