edelweissPronunciation: /ˈeɪd(ə)lvʌɪs/Definition of edelweiss noun a European mountain plant which has woolly white bracts around its small flowers and downy grey-green leaves. Leontopodium alpinum, family Compositae Origin: mid 19th century: from German, from edel 'noble' + weiss 'white'edelweiss in other Oxford dictionaries Definition of edelweiss in the US English dictionary