satchel

First recorded around 1340 as Middle English sachel, borrowed from Old French sachel, which came from Late Latin saccellum, meaning 'money bag' or 'purse.' That word was a diminutive of Latin sacculus, itself a diminutive of saccus, meaning 'bag.'

The word traveled from Latin's plain 'bag' through two layers of diminutive form, shrinking the idea each time, before settling into Middle English as a term for a small bag one carries.

It shares its root, saccus, with the English word 'sack,' both descending from the same Latin word for a bag.