The Collaborative International Dictionary of English v.0.48:

Tradition \Tra*di"tion\, n. [OE. tradicioun, L. traditio, from
   tradere to give up, transmit. See Treason, Traitor.]
   1. The act of delivering into the hands of another; delivery.
      "A deed takes effect only from the tradition or delivery."
      --Blackstone.
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   2. The unwritten or oral delivery of information, opinions,
      doctrines, practices, rites, and customs, from father to
      son, or from ancestors to posterity; the transmission of
      any knowledge, opinions, or practice, from forefathers to
      descendants by oral communication, without written
      memorials.
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   3. Hence, that which is transmitted orally from father to
      son, or from ancestors to posterity; knowledge or belief
      transmitted without the aid of written memorials; custom
      or practice long observed.
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            Will you mock at an ancient tradition begun upon an
            honorable respect?                    --Shak.
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            Naught but tradition remains of the beautiful
            village of Grand-Pr['e].              --Longfellow.
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   4. (Theol.)
      (a) An unwritten code of law represented to have been
          given by God to Moses on Sinai.
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                Making the word of God of none effect through
                your tradition, which ye have delivered. --Mark
                                                  vii. 13.
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      (b) That body of doctrine and discipline, or any article
          thereof, supposed to have been put forth by Christ or
          his apostles, and not committed to writing.
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                Stand fast, and hold the traditions which ye
                have been taught, whether by word or our
                epistle.                          --2 Thess. ii.
                                                  15.
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   Tradition Sunday (Eccl.), Palm Sunday; -- so called because
      the creed was then taught to candidates for baptism at
      Easter.
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