Source : Webster's Revised Unabridged Dictionary (1913)

Sabretasche \Sa"bre*tasche`\, n. [F. sabretache, G.
   s["a]beltasche; s["a]bel saber + tasche a pocket.] (Mil.)
   A leather case or pocket worn by cavalry at the left side,
   suspended from the sword belt. --Campbell (Dict. Mil. Sci.).