Lewis & Short

sŭpĕr-obrŭo (usually separate, sŭ-per obrŭo), ŭi, ŭtum, 3, v. a., to cover over, overwhelm (very rare): Tarpeiam ingestis armis, Prop. 4 (5), 4, 91: Hecubam injectis saxis, Aus. Epit. 25.