Lewis & Short

† ŏbĕliscus, i, m., = ὀβελίσκος (a small spit; hence),

  1. I. An obelisk: trabes ex Syenite marmore fecere reges, obeliscos vocantes Solis numini sacratos, Plin. 36, 8, 14, § 64 sq.; cf. Amm. 17, 4, 17; Isid. Orig. 18, 31; Tac. A. 3, 60.
  2. II. A rose-bud (postclass.), Aus. Idyll. 14, 27.
  3. III. A mark in books placed against suspected passages, an obelisk (†), Aug. Ep. 10, 2 (cf. obelus).