English
mailcatcher
From mail + catcher.
Proto-Germanic *malhō ‘leather bag’
Frankish *malhu ‘bag’
Old French male ‘bag, wallet’
Anglo-Norman male
Middle English male ‘bag’
English mail
Today it means
noun A device on a train for picking up mailbags while the train is in motion.
Language periods are conventional ranges, not dates for this word.
Etymograph / mailcatcher