labor

noun:work, especially hard physical work
- The construction project required months of hard labor.
noun:the process of childbirth, especially the period from the start of uterine contractions to delivery
- She was in labor for twelve hours before the baby was born.
noun:the body of workers in a country or industry, considered as a collective force
- Companies are making huge profits by exploiting cheap labor in poor countries.
verb:to work hard
- He had to labor through the night to finish the report.