Source : Webster's Revised Unabridged Dictionary (1913)

Collector \Col*lect"or\, n. [LL. collector one who collects: cf.
   F. collecteur.]
   1. One who collects things which are separate; esp., one who
      makes a business or practice of collecting works of art,
      objects in natural history, etc.; as, a collector of
      coins.

            I digress into Soho to explore a bookstall. Methinks
            I have been thirty years a collector. --Lamb.

   2. A compiler of books; one who collects scattered passages
      and puts them together in one book.

            Volumes without the collector's own reflections.
                                                  --Addison.

   3. (Com.) An officer appointed and commissioned to collect
      and receive customs, duties, taxes, or toll.

            A great part of this is now embezzled . . . by
            collectors, and other officers.       --Sir W.
                                                  Temple.

   4. One authorized to collect debts.

   5. A bachelor of arts in Oxford, formerly appointed to
      superintend some scholastic proceedings in Lent. --Todd.

Source : WordNet®

collector
     n 1: a person who collects things [syn: {aggregator}]
     2: a person who is employed to collect payments (as for rent or
        taxes) [syn: {gatherer}, {accumulator}]
     3: a crater that has collected cosmic material hitting the
        earth
     4: the electrode in a transistor through which a primary flow
        of carriers leaves the region between the electrodes