I never in my life saw men so careless of the morrow; hand to mouth is the only word that can describe their way of doing; and what with wasted food and sleeping sentries, though they were bold enough for a brush and be done with it, I could see their entire unfitness for anything like a prolonged campaign.
There are no more uses of "hand-to-mouth" in the book.
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She lives hand-to-mouth.
Now you have to understand that twenty pennies might be a good bit of money for some little ragamuffin troupe living hand-to-mouth.