English

mail slot

From mail + slot.

A compound of mail + slot

Proto-Germanic *malhō ‘leather bag’

Frankish *malhu ‘bag’

Old French male ‘bag, wallet’

Anglo-Norman male

Middle English male ‘bag’

English mail

Old French esclot

Middle English slot

English slot

Today it means

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

Language periods are conventional ranges, not dates for this word.

Etymograph / mail slot