environment-n; 2 Senses

Sense Number 1: the surrounding conditions or circumstances

Commentary: ENVIRONMENT[+event] Refers to the state of the current setting. The set of conditions.

He longed for the comfortable environment of his living room.
The university environment made John insecure.
We've stumbled into a very dangerous environment.
Always check the surrounding environment before beginning CPR.

WordNet 2.0 Sense Numbers: 1

Sense Number 2: a geographical area

Commentary: A habitat, area, or part of the earth. Frequently needs to be saved.

The Jones family lives in a flat, agricultural environment.
Penguins have adapted to a polar environment.
Does your congressional representative care about the environment?

WordNet 2.0 Sense Numbers: 2