Kol Nidre Definition
Kol Nidre (kōl nē′drā, nid′rə; Heb kō̂l′nē drā′)
noun
- the prayer declaring a release from religious vows and obligations that were made unintentionally or under duress: it is recited in synagogues at the opening of Yom Kippur eve services
- the traditional music to which this is sung
Etymology: Heb-Aram kol-nidre, all (our) vows: opening words of prayer < Aram kol, all + nidre, vows, pl. of neder, vow < root ndr, to vow

