Hard labour is a term used to describe physical work that is difficult and often tedious. It can involve long hours and strenuous effort. The crossword solutions for the term hard labour are GRIND (5 letters), TRAVAIL (7 letters) and TOIL (4 letters). GRIND is a verb meaning to reduce something to small particles or powder by crushing it. TRAVAIL is a noun meaning hard, exhausting work or labor. TOIL is a verb meaning to work hard and laboriously.