wrong side (†wrong-side, wrongside). That side of some thing, a fabric, etc., which lies or is normally turned inward, downward, or away from one…

gen. That side or surface of any part of the body or of any object, which answers in position to the back; that opposite to the face or front, or…

Now chiefly North American. figurative. With the. The disadvantageous, undesirable, or unattractive side or aspect of something. Apparently rare…

The rear face (of a pier or the like).

gen. The side facing away from or not intended to be seen by the observer; the other side or face.