Yiddish

Conjunction

אָדער • ‎(oder)

1. or

   אָדער...אָדער‎ ― oder...oder ― either...or

Etymology 2

From Old High German ādara, ādra (compare modern German Ader), from Proto-Germanic *ēdrǭ, *ēþrǭ, *ēþrō, from Proto-Indo-European *ēt-er- ‎(“stomach, intestines”).

Noun

אָדער • ‎(oder) m, plural אָדערן ‎(odern)

1. (anatomy) vein, blood vessel

Derived terms

• אָדערל ‎(oderl, “capillary”)