The Collaborative International Dictionary of English v.0.48:

Urge \Urge\, v. t. [imp. & p. p. Urged; p. pr. & vb. n.
   Urging.] [L. urgere; akin to E. wreak. See Wreak, v. t.]
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   1. To press; to push; to drive; to impel; to force onward.
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            Through the thick deserts headlong urged his flight.
                                                  --Pope.
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   2. To press the mind or will of; to ply with motives,
      arguments, persuasion, or importunity.
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            My brother never
            Did urge me in his act; I did inquire it. --Shak.
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   3. To provoke; to exasperate. [R.]
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            Urge not my father's anger.           --Shak.
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   4. To press hard upon; to follow closely
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            Heir urges heir, like wave impelling wave. --Pope.
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   5. To present in an urgent manner; to press upon attention;
      to insist upon; as, to urge an argument; to urge the
      necessity of a case.
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   6. To treat with forcible means; to take severe or violent
      measures with; as, to urge an ore with intense heat.
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   Syn: To animate; incite; impel; instigate; stimulate;
        encourage.
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WordNet (r) 3.0 (2006):

urging
    n 1: a verbalization that encourages you to attempt something;
         "the ceaseless prodding got on his nerves" [syn: goad,
         goading, prod, prodding, urging, spur,
         spurring]
    2: the act of earnestly supporting or encouraging
    3: insistent solicitation and entreaty; "his importunity left me
       no alternative but to agree" [syn: importunity, urgency,
       urging]