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

Burglar \Bur"glar\, n. [OE. burg town, F. bourg, fr. LL. burgus
   (of German origin) + OF. lere thief, fr. L. latro. See
   {Borough}, and {Larceny}.] (Law)
   One guilty of the crime of burglary.

   {Burglar alarm}, a device for giving alarm if a door or
      window is opened from without.

资料来源 : WordNet®

burglar alarm
     n 1: a loud warning signal produced by a burglar alarm; "they
          could hear the burglar alarm a mile away"
     2: a warning device that is tripped off by the occurrence of a
        burglary