Definition
Labouring with great effort and diligence; working hard.
In Context
- "I'm sorry I can't make it to the party—I'm going to be hard at work all day."
- "The relegation of locomotives to storage seemed to be on a very unsystematic basis on all three principal Irish railways: while one member of a class was rusting in a yard, another might be hard at work in revenue-earning service—[…]."
See Also
- hard at it