GEM Copy link • GEM 1. s. Jewel (Vid :), gemma. In Botany, gemma (Cic., Col., etc.). To put forth its gems, gemmare: gemmascere. 2. v. gemmare (to set with jewels; in this sense only in passive partciple; mostly intransitive, gemmans sceptrum, etc.; and IMPROP., “gemmed with dew,” gemmans rore recenti, Lucr.): gemmis distinguere (e.g., a golden cup, Cic.): distinguere (to relieve a surface with ornaments placed at intervals).