资料来源 : Webster's Revised Unabridged Dictionary (1913)

Telescopic sight \Tel`e*scop"ic sight`\
   A sight consisting of a small telescope, as on a compass or
   rifle.

资料来源 : WordNet®

telescopic sight
     n : gunsight consisting of a telescope on a firearm for use as a
         sight [syn: {telescope sight}]