Read the dictionary definition of labor. All definitions for this word.
1. productive work (especially physical work done for wages)
1. his labor did not require a great deal of skill
2. any piece of work that is undertaken or attempted
1. he prepared for great undertakings
3. the federal department responsible for promoting the working conditions of wage earners in the United States; created in 1913
4. a social class comprising those who do manual labor or work for wages
1. there is a shortage of skilled labor in this field
5. a political party formed in Great Britain in 1900; characterized by the promotion of labor's interests and formerly the socialization of key industries
6. an organized attempt by workers to improve their status by united action (particularly via labor unions) or the leaders of this movement
7. concluding state of pregnancy; from the onset of contractions to the birth of a child
1. she was in labor for six hours
8. undergo the efforts of childbirth
9. strive and make an effort to reach a goal
1. She tugged for years to make a decent living
2. We have to push a little to make the deadline!
3. She is driving away at her doctoral thesis
10. work hard
1. She was digging away at her math homework
2. Lexicographers drudge all day long
