Lewis & Short

răcēmus, i, m. [ῤάξ, ῤαγός].

  1. I. Lit., the stalk of a cluster of grapes and similar plants: alia (poma) racemis dependent, ut uvae, palmae, Plin. 15, 28, 34, § 115; cf. id. 16, 26, 48, § 112; 14, 3, 4, § 43: sunt et mora cruenta, et lentis uva racemis, Verg. Copa, 21.
  2. II. Transf.
    1. A. A bunch of berries, cluster of grapes: fert uva racemos, Verg. G. 2, 60; Ov. M. 3, 484; id. Tr. 4, 6, 9; Prop. 4 (5), 2, 13; Hor. C. 2, 5, 11 al.: lecti de vite racemi, Ov. A. A. 3, 703; Verg. G. 2, 102; Sil. 7, 208 al.
    2. B. Wine (poet.): donec eras mixtus nullis, Acheloë, racemis, Ov. F. 5, 343.