Definition of "sink in" []

• Become clear in one's mind. (verb)

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• "He told one of his overseers, in reference to the sub-overseers, that “to treat them civilly is no more than what all men are entitled to, but my advice to you is, to keep them at a proper distance; for they will grow upon familiarity, in proportion as you will sink in authority if you do not.”"
• ""They're doing what" Field Marshal Granville gaped at his Massood counterpart only long enough for the import of the other's words to sink in before the two of them started toward Communications."
• "But the air's sense of heat and cold is so subtle and exquisite as far to exceed the perception of the human touch, insomuch that a ray of sunshine, or the heat of the breath, much more the heat of one's hand placed on the top of the glass, will cause the water immediately to sink in a perceptible degree."