Mayday

communications signal May·day \ ˈmā-ˌdā \
Updated on: 15 Nov 2017

Definition of Mayday

used as a distress call in international radio-telephone communications

Origin and Etymology of mayday

French m'aider help me


May Day

noun \ ˈmā-ˌdā \

Definition of May Day

: May 1 celebrated as a springtime festival and in some countries as Labor Day

First Known Use of may day

13th century


MAYDAY Defined for English Language Learners

May Day

noun

Definition of May Day for English Language Learners

  • : May 1 celebrated in many countries as a spring festival and in some countries as a holiday in honor of working people


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the significant part of a grievance

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