Examples from the Web for side-saddle
That broad back carried, however, most comfortably a side-saddle or a pillion.Customs and Fashions in Old New England|Alice Morse Earle
I must take them with me, but you can have your side-saddle.Nevermore|Rolf Boldrewood
Did you really take that pair of French corsets for a side-saddle, sir?
Here, Tom Leicester, you put my side-saddle on that gray horse, and the man's saddle on the piebald there.
Of course, in the side-saddle, the tendency of all beginners is to carry the right shoulder forward and higher than the left.Riding and Driving for Women|Belle Beach