Final answer:
The word 'roused' in the given context means to wake someone up or to awaken someone from sleep.
Step-by-step explanation:
The word 'roused' in the given context means to wake someone up or to awaken someone from sleep. In this case, all hands were woken up at 3 a.m. for the purpose of sledging the two boats. The word 'roused' implies that the individuals were given a sense of urgency to wake up and perform a specific task.
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