Green’s Dictionary of Slang

a landed estate.

c.1698		B.E. Dict. Canting Crew n.p.: Terra-firma an Estate in Land, also a Continent. Has the Cull any Terra Firma? Has the Fool any Land?
1725		New Canting Dict. [as cit. c.1698].
1737, 1759, 1760, 1776		Bailey Universal Etym. Eng. Dict. [as cit. c.1698].
1785, 1788, 1796		Grose Classical Dict. of the Vulgar Tongue.
1811		Lex. Balatronicum.
1873		Sl. Dict.