(~s)
1.
You can refer to a task or a job as a ~ when you have to keep doing it although it is unpleasant and exhausting.
Mr Stocks can expect a gruelling week on the publicity ~.
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2.
A ~ is a piece of equipment, for example an exercise machine, consisting of a wheel with steps around its edge or a continuous moving belt. The weight of a person or animal walking on it causes the wheel or belt to turn.
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