noun, Nautical.
a flag of the International Code of Signals symbolizing the letter Y, flown alone by a ship to indicate that it is carrying mail: a square flag with red and yellow diagonal stripes.
any of various other flags indicating that a ship is carrying mail.


Read Also:

  • Mail gateway

    messaging A machine that connects two or more electronic mail systems (including dissimilar mail systems) and transfers messages between them. Sometimes the mapping and translation can be quite complex, and it generally requires a store and forward scheme whereby the message is received from one system completely before it is transmitted to the next system, […]

  • Mailgram

    [meyl-gram] /ˈmeɪlˌgræm/ Trademark. 1. a message transmitted electronically to the post office nearest the addressee and then delivered by regular mail. 2. the service that sends such messages.

  • Mail hub

    mail server

  • Mail-in

    [meyl-in] /ˈmeɪlˌɪn/ adjective 1. conducted or responding by mail: a mail-in referendum. noun 2. something conducted or returned by mail, as a questionnaire or vote.

Disclaimer: Mail-flag definition / meaning should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional. All content on this website is for informational purposes only.