Definition of sabretache in US English:

sabretache

noun

historical
  • A flat satchel on long straps worn by some cavalry and horse artillery officers from the left of the waist-belt.

    • ‘Commanders needed maps and notebooks, and the sabretache, hanging from the waist-belt, not only housed pen, ink, and paper but also provided a convenient writing surface.’
    • ‘Away to his left Roger Palmer was scribbling a note on the smooth surface of his sabretache.’
    • ‘Knowing myself too great a sinner to merit so sacred a morsel, I slipped it into my sabretache, and wish myself near E., whose innocence might allow her to eat it without sacrilege.’

Origin

Early 19th century: from French, from German Säbeltasche, from Säbel ‘saber’ + Tasche ‘pocket’.

Pronunciation

sabretache

/ˈseɪbərˌtæʃ//ˈsābərˌtaSH/