Nazarene foretop, n. — Green’s Dictionary of Slang

Nazarene foretop n.

[SE Nazarene, a synon. for Christ + foretop, the lock of hair (whether real or in a wig) that covers the crown of the head]

an ornamental wig made in imitation of Christ’s head of hair, as represented by painters.

c.1786		Grose Classical Dict. of the Vulgar Tongue ms. additions n.p.: Nazarene Foretop. The foretop to a Wig made in immitation [sic] of Christ’s Head of Hair, as represented by the Painters & Sculptors.
1796		Grose Classical Dict. of the Vulgar Tongue (3rd edn) n.p.:
1811		Lex. Balatronicum [as cit. 1796].