"labours" in the noun sense
1. labor, labour, working class, proletariat
a social class comprising those who do manual labor or work for wages
"there is a shortage of skilled labor in this field"
2. parturiency, labor, labour, confinement, lying-in, travail, childbed
concluding state of pregnancy from the onset of contractions to the birth of a child
"she was in labor for six hours"
3. British Labour Party, Labour Party, Labour, Labor
a political party formed in Great Britain in 1900 characterized by the promotion of labor's interests and formerly the socialization of key industries
4. labor, labour, toil
productive work (especially physical work done for wages
"his labor did not require a great deal of skill"
"labours" in the verb sense
1. labor, labour, toil, fag, travail, grind, drudge, dig, moil
work hard
"She was digging away at her math homework"
"Lexicographers drudge all day long"
2. tug, labor, labour, push, drive
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"
3. labor, labour
undergo the efforts of childbirth
Source: WordNet® (An amazing lexical database of English)
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