Labour
WordNet
noun
(1) Productive work (especially physical work done for wages)
"His labor did not require a great deal of skill"
(2) A social class comprising those who do manual labor or work for wages
"There is a shortage of skilled labor in this field"
(3) A political party formed in Great Britain in 1900; characterized by the promotion of labor's interests and the socialization of key industries
(4) Concluding state of pregnancy; from the onset of labor to the birth of a child
"She was in labor for six hours"
verb
(5) Undergo the efforts of childbirth
(6) Strive and make an effort to reach a goal
"She tugged for years to make a decent living"
"We have to push a little to make the deadline!"
"She is driving away at her doctoral thesis"
(7) Work hard
"She was digging away at her math homework"
"Lexicographers drudge all day long"