Where does “mail slot” come from?

mail slot (English) comes from English mail, from Middle English mal, from Old English māl, from Old Norse mál, from Proto-Germanic mēlą, from Proto-Indo-European melh₂-, from Proto-Indo-European mel-, from Proto-Indo-European mey- — to strengthen; to bind; to change, exchange.

mail slot (English): A slot in a wall or door through which mail is...

Definitions

  1. A slot in a wall or door through which mail is...

Ancestry of “mail slot”, step by step

mail slot traces back through two separate lines of ancestry.

via English mail

StepLanguageWordMeaning
1EnglishmailA bag or wallet; A bag containing letters to be...
2Middle Englishmal
3Old Englishmālspeech, contract, agreement; suit, case, action,...
4Old Norsemállanguage; speech; matter, affair
5Proto-Germanicmēląmeasure, measurement; time, occasion; point in...
6Proto-Indo-Europeanmelh₂-to grind, to crush
7Proto-Indo-Europeanmel-soft; tender; weak; to deceive; to rub
8Proto-Indo-Europeanmey-to strengthen; to bind; to change, exchange

via English slot

StepLanguageWordMeaning
1EnglishslotA broad, flat, wooden bar, a slat, especially as...
2Middle Englishslot
3Old Frenchesclot
4Old Norseslóðtrail, track
5Proto-Germanicslōdō
Every word from Proto-Indo-European mey-Every word from Proto-Indo-European mel-Every word from Proto-Indo-European melh₂-