What is Side?

Legal Definition
Side (Greek: Σίδη) is an ancient Greek city on the southern Mediterranean coast of Turkey, a resort town and one of the best-known classical sites in the country. It lies near Manavgat and the village of Selimiye, 78 km from Antalya in the province of Antalya.

It is located on the eastern part of the Pamphylian coast, which lies about 20 km east of the mouth of the Eurymedon River. Today, as in antiquity, the ancient city is situated on a small north-south peninsula about 1 km long and 400 m across.
-- Wikipedia
Legal Definition
The same court is sometimes said to have different sides; that is, different provinces or fields of jurisdiction. Thus, an admiralty court may have an "instance side," distinct from its powers as a prize court; the "crown side," (criminal jurisdiction) is to be distinguished from the "plea side," (civil Jurisdiction ;) the same court may have an "equity side" and a "law side."
-- Black's Law Dictionary
Legal Definition
-- Ballentine's Law Dictionary