[1] : The Collaborative International Dictionary of English v.0.48

namely \name"ly\, adv.
   1. by name; by particular mention; specifically; especially;
      expressly. obs. --chaucer.
      1913 webster

            the solitariness of man . . . god hath namely and
            principally ordered to prevent by marriage.
                                                  --milton.
      1913 webster

   2. that is to say; to wit; videlicet; -- introducing a
      particular or specific designation.
      1913 webster

            for the excellency of the soul, namely, its power of
            divining dreams; that several such divinations have
            been made, none can question.         --addison.
      1913 webster

[2] : WordNet (r) 2.0

namely
     adv : as follows syn: viz., that is to say, videlicet
see also:
viz. that is to say videlicet 

[3] : Moby Thesaurus II by Grady Ward, 1.0

21 moby thesaurus words for "namely":
   as here defined, as here interpreted, especially, exempli gratia,
   for example, for instance, id est, in explanation, in other words,
   nominally, particularly, sc, scil, scilicet, specially,
   specifically, that is, to explain, to wit, videlicet, viz

Namely >> N Words
Namely, definition of term: Namely
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