whiggam

As these peasants drove into Edinburgh to market, they were observed to make great use of the word "whiggam" in talking to their horses.

History of the United States, Volume 3 (of 6) Elisha Benjamin Andrews 1880

Cameronian rising, when it was applied to the Scotch Presbyterians, and is derived by some from the whey which they habitually drank, and by others from a word, "whiggam," used by the western Scottish drovers.

A History of the Four Georges, Volume I (of 4) Justin McCarthy 1871

[8] "The south-west counties of Scotland have seldom corn enough to serve them round the year; and the northern parts producing more than they need, those in the west come in the summer to buy at Leith the stores that come from the north; and from a word 'whiggam,' used in driving their horses, all that drove were called the 'whiggamores,' and shorter, the 'whiggs.'

Claverhouse Mowbray Morris 1879