Definition of "drop-ins" [drop-ins]

• Plural form of drop-in. (noun)

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• "Part of being on tour includes doing what we call "drop-ins.""
• "Countertop: Also called "drop-ins" because they are self-rimming and are placed on and into a vanity countertop."
• "Pop sensation Rihanna has reportedly hired a female private investigator to make periodic drop-ins and ensure that boyfriend Chris Brown is behaving himself like a good boy when he embarks on a tour of Europe later this month."