base
n. countable B1 Intermediate Oxford US //ˈbeɪs// UK //bˈeɪs// base
n. The bottom part of something that supports it. It can also be the main place where an organization operates from, like a military base.
n. The lowest part or edge of something, especially the part on which it rests or is supported. It can also refer to a central point or headquarters from which an activity is coordinated.
The lamp has a heavy base.
The climbers set up a base camp at the foot of the mountain.
The company's expanding customer base provides a stable foundation upon which it can build future marketing strategies and launch new products.
From base (“short”).