’However,’ thought Nicholas as he departed on his benevolent errand; ’she cannot fail to become attached to him, when she knows what a devoted creature he is, and as she must quickly make the discovery, his probation will be a short one.’
There are no more uses of "probation" in the book.
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The judge sentenced her to three years of probation instead of sending her to prison.
I start the new job next week, but my medical insurance will not begin until after a sixty day probationary period.