What is the meaning of the word "labor"?

Definitions:

In economics, is one of the factors of production, along with capital, land, and entrepreneurship. NOUN
- Labor costs are a significant factor for businesses when making decisions about production and pricing strategies.
In medical terminology, specifically refers to the process of childbirth. NOUN
- After several hours of intense labor, the baby was born healthy and happy.
Refers to physical or mental effort exerted to produce goods or services. NOUN
- Skilled labor is in high demand in the tech industry, driving competition for qualified workers.
Refers to the workforce or the people who are engaged in productive work, especially as employees in a business or industry. NOUN
- The company announced plans to hire additional labor to meet the growing demand for its products.