The Collaborative International Dictionary of English v.0.48:

Insolence \In"so*lence\, n. [F. insolence, L. insolentia. See
   Insolent.]
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   1. The quality of being unusual or novel. [Obs.] --Spenser.
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   2. The quality of being insolent; pride or haughtiness
      manifested in contemptuous and overbearing treatment of
      others; arrogant contempt; brutal impudence.
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            Flown with insolence and wine.        --Milton.
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   3. Insolent conduct or treatment; insult.
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            Loaded with fetters and insolences from the
            soldiers.                             --Fuller.
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The Collaborative International Dictionary of English v.0.48:

Insolence \In"so*lence\, v. t.
   To insult. [Obs.] --Eikon Basilike.
   [1913 Webster]

WordNet (r) 3.0 (2006):

insolence
    n 1: the trait of being rude and impertinent; inclined to take
         liberties [syn: crust, gall, impertinence,
         impudence, insolence, cheekiness, freshness]
    2: an offensive disrespectful impudent act