Foray (noun)

1. A brief excursion or expedition, especially one made by a group of people into enemy territory.
2. A temporary or brief attempt to do something.

Origin:

From the middle english word "foraire" meaning a raid or an expedition.

Examples:

1. The company made a foray into the Chinese market.
2. The soldiers made a foray into the enemy camp at night.
3. It was his first foray into politics.
4. The company is planning a foray into the electric car market.
5. She made a foray into the fashion industry, but it didn't last long.