bea·dle /ˈbidḷ/
  小吏,遊行領隊
  Bea·dle n.
  1. A messenger or crier of a court; a servitor; one who cites or bids persons to appear and answer; -- called also an apparitor or summoner.
  2. An officer in a university, who precedes public processions of officers and students. [Eng.]
  Note: ☞ In this sense the archaic spellings bedel (Oxford) and bedell (Cambridge) are preserved.
  3. An inferior parish officer in England having a variety of duties, as the preservation of order in church service, the chastisement of petty offenders, etc.
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  beadle
       n 1: a minor parish official who serves as an usher and preserves
            order at services
       2: United States biologist who discovered how hereditary
          characteristics are transmitted by genes (1903-1989) [syn:
           George Beadle, George Wells Beadle]