Green’s Dictionary of Slang

1. in pl., the feet.

1698		N. Ward ‘A Trip to Jamaica’ in Writings (1704) 155: The Sins of his Youth having crep’t into his Pedestals, he limp’d about [...] like a Cripple.
1709		N. Ward Compleat and Humorous Account of Remarkable Clubs (1756) 102: A famous Corrector of Toe-Almanacks, would be pulling out a Handful of the horny Pearl he had dug out of the Pedestals of pinch-footed Ladies.

2. (US) in pl. the legs.

1823		[C.M. Westmacott] Mammon in London 1 225: [H]e then waddled away, as well as his eccentric pedestals would let him.
1851		Life in Boston & N.Y. (Boston, MA) 28 June n.p.: Her braces [...] gave way, and down went the wide trowsers, leaving her pedestals exposed to the view of the whole rabble.