Eervar; the last pig in a litter. This bonnive [sucking-pig] being usually very small and hard to keep alive is often given to one of the children for a pet; and it is reared in great comfort in a warm bed by the kitchen fire, and fed on milk. I once, when a child, had an eervar of my own which was the joy of my life. Irish iarmhar [eervar], meaning ‘something after all the rest’; the hindmost.
—P. W. Joyce: English as We Speak it in Ireland (1910)