The Nuttall Encyclopedia
Among the Jews people consecrated by a vow to some special religious service, generally for a definite period, but sometimes for life; during its continuance they were bound to abstain not merely from strong drink, but from all fruit of the vine, to wear their hair uncut, and forbidden to approach a dead body, long hair being the symbol of their consecration; the vow was sometimes made by their parents for them before their birth; the said vow is the symbolic assertion of the right of any and every man to consecrate himself, in disregard of every other claim, to any service which God may require of him.
Wood, James, ed. Entry for 'Nazarites'. The Nuttall Encyclopedia. https://www.studylight.org/encyclopedias/eng/nut/n/nazarites.html. Frederick Warne & Co Ltd. London. 1900.