[ I usually + adv/prep ] informal to work hard over a long period, especially doing work that is difficult or boring:

[ I + adv/prep ] to travel or move with difficulty, for example through wet, sticky soil or snow, or when you are very tired:

[ T ] UK to hit a ball hard and often in an uncontrolled way

[ S ] informal a period of difficult or tiring effort:

[ C ] UK informal a very hard, and often uncontrolled hit: