Meaning of LEATHER in English

To lose leather; to be galled with riding on horseback, or, as the Scotch express it, to be saddle sick. To leather also meant to beat, perhaps originally with a strap: I'll leather you to your heart's content. Leather- headed; stupid. Leathern conveniency; term used by quakers for a stage-coach.

Slang English vocab.      Английский сленговый словарь.