Modern Greek lemma

δίδυμος

dídymos — “twin, twinned, being one of a pair of twins”

twin, twinned, being one of a pair of twins; (figuratively) matching exactly; twin (either of two people who shared the same uterus, or of two similar or closely related objects)

Definitions from English Wiktionary via kaikki.org (wiktextract), licensed CC BY-SA 4.0.