vamp, n.¹ — Green’s Dictionary of Slang

vamp n.¹

[SE vamp, that part of the stocking that covers the ankle and foot]

an old stocking that has had the foot repaired.

c.1698		B.E. Dict. Canting Crew n.p.: Vamp [...] a Sock.
1859, 1860		Hotten Dict. of Modern Sl. etc.
1873		Sl. Dict.
1890–1904		Farmer & Henley Sl. and Its Analogues.
1895		Crowe Aus. Sl. Dict. 91: Vamps, stockings.