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

Conning tower \Con"ning tow"er\, n.
   The shot-proof pilot house of a war vessel.

资料来源 : WordNet®

conning tower
     n 1: an armored pilothouse on a warship
     2: a raised bridge on a submarine; often used for entering and
        exiting