Green’s Dictionary of Slang

(Irish) a slipper.

1884		Folk-lore Jrnl 2:14 161: Pampootie, as a name for the slipper, is said to have been introduced some two or more hundred years ago.
1891		E. Lawless Grania 13: Little Grania [...] scrambled nimbly on to the narrow, almost knife-like, edge of the hooker, twisting her small pampootie-clad feet.
1906		Somerville & Ross Some Irish Yesterdays 16: Men and women alike wear ‘pampooties’ – slippers of raw cowhide, with the hair outside.
1908		Dublin Dly Exp. 22 Jan. 2/5: The sandal, the pampootie, the mocassin and other pieces of foot-gear.
1952		B. MacMahon Children of the Rainbow 338: You patcher of brogues and pampooties and poor yellow gaiters!
1967		S. McCann Story of the Abbey Theatre 108: That long catalogue of ‘contacts with daily life’, stretching from the Aran ‘pampooties’ and red petticoats [...] to the frying sausages in ‘Juno’ .