subs. (colloquial).—1. Somebody or something indefinite; and (2) in place of a thing forgotten, or which it is not desired to mention: e.g., Mr. SO-AND-SO.
SO LONG, intj. (common).—Good bye!
1902. LYNCH, High Stakes, xxxii. I’m off for change of air…. SOW LONG. I’ll see ye later.
