Definition of "fatness"

Bread made of Pannick nouriſheth little, and is cold and dry, verie brittle, hauing in it neither clammineſſe, nor fatneſſe; and therefore it drieth a moiſt belly.

1597, John Gerarde [i.e., John Gerard], “Of Panick”, in The Herball or Generall Historie of Plantes. […], London: […] Edm[und] Bollifant, for Bonham and Iohn Norton, book I, page 79

This fatness was Kartar Singh: it was the flesh singing, in bulging cantilenas and plump pedal-notes, a congenital and contented stupidity, a stupidity itself as positive as the sun.

1958, Anthony Burgess, The Enemy in the Blanket (The Malayan Trilogy), published 1972, page 284