Source : Webster's Revised Unabridged Dictionary (1913)

Examiner \Ex*am"in*er\, n.
   One who examines, tries, or inspects; one who interrogates;
   an officer or person charged with the duty of making an
   examination; as, an examiner of students for a degree; an
   examiner in chancery, in the patent office, etc.

Source : WordNet®

examiner
     n 1: someone who administers a test to determine your
          qualifications [syn: {tester}, {quizzer}]
     2: an investigator who observes carefully; "the examiner
        searched for clues" [syn: {inspector}]