The Collaborative International Dictionary of English v.0.48:

Singlestick \Sin"gle*stick`\, n.
   (a) In England and Scotland, a cudgel used in fencing or
       fighting; a backsword.
   (b) The game played with singlesticks, in which he who first
       brings blood from his adversary's head is pronounced
       victor; backsword; cudgeling.
       [1913 Webster]

WordNet (r) 3.0 (2006):

singlestick
    n 1: a stick used instead of a sword for fencing [syn:
         singlestick, fencing stick, backsword]