The Collaborative International Dictionary of English v.0.48:

Solicitude \So*lic"i*tude\, n. [F. sollicitude,r L.
   sollicitudo.]
   The state of being solicitous; uneasiness of mind occasioned
   by fear of evil or desire good; anxiety.
   [1913 Webster]

         The many cares and great labors of worldly men, their
         solicitude and outward shows.            --Sir W.
                                                  Raleigh.
   [1913 Webster]

         The mother looked at her with fond solicitude. --G. W.
                                                  Cable.
   [1913 Webster]

   Syn: Carefulness; concern; anxiety. See Care.
        [1913 Webster]

WordNet (r) 3.0 (2006):

solicitude
    n 1: a feeling of excessive concern [syn: solicitude,
         solicitousness]