From the Hebrew “nazir” meaning “consecrated” or “separated.” In the plates of brass this seems to be a term for those that give a portion of their lives to God, while in the Old Testament it appears to be one who gives their whole lives to God. Samson even stated “I have been a Nazarite unto God from my mother's womb,” though this may merely be stating that he never in his live cut his hair (Judges 16:17). Some see Mark 14:25 and Luke 22:15–18 as evidence that Jesus was a Nazarite or that He vow before His crucifixion.
See 4 Moses 35, Numbers 6:1–21