Definition of "settle down" [settle down]

• To become quiet and calm after a period of restlessness. (verb)
• To establish a settled lifestyle, and especially to marry. (verb)

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• ""If at the end of that time (3 or 4 years hence) I could find some fair damsel who was foolish enough to trust me," [he suggested hopefully,] "I think I would get-married, and settle down to sober work for the rest of my days in some small city where one could enjoy the advantages of a city and at the same time not feel as if lost.""
• "Oscar has already made it through his party-guy years and is more inclined to settle down now with the right girl."
• "That might mean leaving your partner to his duck lorange while you grab a Big Mac elsewhere, or it might mean you cleanse together and settle down for the next course as a couple."