Definition of "pannum"

Here's Pannum and Lap, and good Poplars of Yarrum, / To fill up the Crib, and to comfort the Quarron.

1641–42, Richard Brome, A Joviall Crew, or, The Merry Beggars‎, published 1652, act 2

As far as injun, pannum, and cheese, and a drop of heavy goes, you are perfectly welcome.

1844, Charles Selby, London by Night, act 1, scene 2

I have a rorty gal, also a knowing pal, / And merrily together we jog on, / I doesn't care a flatch, as long as I've a tach, / Some pannum for my chest, and a tog on.

c. 1864, Alfred Peck Stevens, “The Chickaleary Cove”, in Farmer, John Stephen, editor, Musa Pedestris‎, published 1896, page 161