Lewis & Short

rĕ-nīdĕo (perf. reniduit, ἐμειδίασεν, Gloss. Philox.), ēre, v. n. [perh. kindr. with νίζω], to shine again, shine back; to glitter, glisten, be bright or resplendent (poet. and not freq. till after the Aug. period).

  1. I. Lit.: nec domus argento fulgenti auroque renidet, Lucr. 2, 27: ut pura nocturno renidet Luna mari Gnidiusve Gyges, Hor. C. 2, 5, 19: non ebur neque aureum Meā renidet in domo lacunar, id. ib. 2, 18, 2; so, sparsa orichalca, Stat. Th. 10, 660: ostrum, Petr. poët. 119, 29: circum renidentes Lares, i. e. shining from the reflection of the fire, Hor. Epod. 2, 66: late fluctuat omnis Aere renidenti tellus, with gleaming brass (of arms), Verg. G. 2, 282 (cf.: aere renidescit tellus, Lucr. 2, 326).
  2. II. Trop.
    1. * A. In gen., to shine: jam sola renidet in Stilichone salus, Claud. in Eutr. 2, 501.
    2. B. In partic., to shine or beam for joy, to be glad, cheerful: (puer Icarus) ore renidenti Captabat plumas, Ov. M. 8, 197; Val. Fl. 4, 234: tractabat ceram puer pennasque renidens, id. A. A. 2, 49: puer, Stat. Th. 4, 789; cf.: hilarior protinus renidet oratio, Quint. 12, 10, 28.
      With object-clause, as cause of the joy: adjecisse praedam Torquibus exiguis renidet, rejoices, Hor. C. 3, 6, 12.
      1. 2. Transf. (by a natural figure, as, conversely, ridere is used poet. for splendere, Hor. C. 4, 11, 6 al.), to smile, laugh (syn. subrideo): homo renidens, smiling, Liv. 35, 49; Tac. A. 15, 66: ad haec renidens Milo … inquit, App. M. 2, p. 120, 16: Tiberius torvus aut falsum renidens vultu, Tac. A. 4, 60; cf.: torvum renidens, Amm. 14, 9, 6; Tac. H. 4, 43: renidenti cohibens suspiria vultu, Val. Fl. 4, 359: (Cupido) Iste lascivus puer ac renidens, Sen. Hippol. 277: Egnatius quod candidos habet dentes, Renidet usquequaque, Cat. 39, 1 sq.
        1. * b. With dat. (like arridere), to smile upon, be gracious to: mihi renidens Fortuna, App. M. 10, p. 246, 17.