Definition of message box in English:

message box

Line breaks: mes|sage box

noun

Computing
  • A small box that appears on a computer screen, in which instructions to or from a user are displayed.
    More example sentences
    • However, if the attached file is opened, a fake message box can appear berating the Windows operating system in a lengthy tirade.
    • Once the application has the result, it prints out a message to a message box to show if the login was successful.
    • Expect to get null pointer errors, every so often; an annoying message box appears, informing you of some mysterious internal null pointer error.

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Pronunciation: kəːf
noun
a slit made by cutting with a saw