mainside

noun
UK /ˈmeɪnsaɪd/
US /ˈmeɪnsaɪd/

The main side is the biggest or most important part of something.

The mainside of the playground has the biggest slide.


OTHER MEANINGS

2. The side of a ship or building that faces the most important direction.

The mainside of the ship faced the harbor.

3. The primary area of a place or activity.

Most of the shops are on the mainside of town.

4. The stronger or more used side of a tool or object.

Hold the hammer by its mainside for a better grip.