saddle (n.) Look up saddle at Dictionary.com
Old English sadol "seat for a rider," from Proto-Germanic *sathulaz (cognates: Old Norse söðull, Old Frisian sadel, Dutch zadel, zaal, German Sattel "saddle"), from PIE *sed- (1) "to sit" (cognates: Latin sedere "to sit," Old Church Slavonic sedlo "saddle;" see sedentary). Figurative phrase in the saddle "in an active position of management" is attested from 1650s. Saddle stitch (n.) was originally in bookbinding (1887).
saddle (v.) Look up saddle at Dictionary.com
Old English sadolian "to put a riding saddle on;" see saddle (n.). The meaning "to load with a burden" is first recorded 1690s. Related: Saddled; saddling.