The term 'toil (away)' can be defined as hard work or LABOR, often done for long periods of time. The two crossword solutions for this term are 'SLAVE' and 'LABOR'. A SLAVE is a person who is owned by another and is forced to work without pay. LABOR is the physical or mental effort that is used to produce goods or services. Both terms refer to hard work that is done for long periods of time, often with little reward.