pishogueMagic, witchcraft; a spell, especially one designed to cause or cure illnesses to man or beast, or to increase or decrease the quantities of farm products such as butter or milk.
poteenIllegally produced Irish whiskey; moonshine.
powldoodyA variety of Irish oyster, eaten as a delicacy.
SheltaA language spoken by some Irish Travellers, particularly in Ireland, but also in Britain, which has been heavily influenced by English and Irish and is now effectively a cant or creole, though some scholars think it may have originated as and may retain elements of a non-Irish, non-English language.
shenaniganDishonest, underhanded, or unscrupulous activities or behaviour; skulduggery, trickery; also, mischievous behaviour or play; high jinks.