From WordNet (r) 3.0 (2006):
toil
n 1: productive work (especially physical work done for wages);
"his labor did not require a great deal of skill" [syn:
labor, labour, toil]
v 1: work hard; "She was digging away at her math homework";
"Lexicographers drudge all day long" [syn: labor,
labour, toil, fag, travail, grind, drudge,
dig, moil]