When a turn or trick is executed in a direction that the back of the body is facing the arc of the trick.

adjective Generally refers to the direction of a turn on an incline, meaning the backside of the body is facing the wall. However, in modern street skating this has taken on new meanings as tricks progress from older, established tricks.

Same as heelside.

the area above a packer between casing ID and tubing OD

The area away from the playcall. What most defenders land on after being pancaked.

Barn area of a racetrack.

Backside is the side that is opposite the front. For postcards, the backside is not coated with aqueous coating.

the side of an object that is opposite its front; "his room was toward the rear of the hotel"

Of a semiconductor or wafer; the side opposite the front or polished side of a wafer.

The hinder part, posteriors, or rump of a person or animal.

the fleshy part of the human body that you sit on; "he deserves a good kick in the butt"; "are you going to sit on your fanny and do nothing?"

see back surface.