The Collaborative International Dictionary of English v.0.48:

Semblance \Sem"blance\, n. [F. See Semblable, a.]
   1. Seeming; appearance; show; figure; form.
      [1913 Webster]

            Thier semblance kind, and mild their gestures were.
                                                  --Fairfax.
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   2. Likeness; resemblance, actual or apparent; similitude; as,
      the semblance of worth; semblance of virtue.
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            Only semblances or imitations of shells. --Woodward.
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WordNet (r) 3.0 (2006):

semblance
    n 1: an outward or token appearance or form that is deliberately
         misleading; "he hoped his claims would have a semblance of
         authenticity"; "he tried to give his falsehood the gloss of
         moral sanction"; "the situation soon took on a different
         color" [syn: semblance, gloss, color, colour]
    2: an erroneous mental representation [syn: illusion,
       semblance]
    3: picture consisting of a graphic image of a person or thing
       [syn: likeness, semblance]