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

attention \atten"tion\, n. l. attentio: cf. f. attention.
   1. the act or state of attending or heeding; the application
      of the mind to any object of sense, representation, or
      thought; notice; exclusive or special consideration;
      earnest consideration, thought, or regard; obedient or
      affectionate heed; the supposed power or faculty of
      attending.
      1913 webster

            they say the tongues of dying men
            enforce attention like deep harmony.  --shak.
      1913 webster

   note: attention is consciousness and something more. it is
         consciousness voluntarily applied, under its law of
         limitations, to some determinate object; it is
         consciousness concentrated. --sir w. hamilton.
         1913 webster

   2. an act of civility or courtesy; care for the comfort and
      pleasure of others; as, attentions paid to a stranger.
      1913 webster

   to pay attention to, to pay one's attentions to, to be
      courteous or attentive to; to wait upon as a lover; to
      court.
      1913 webster

   syn: care; heed; study; consideration; application;
        advertence; respect; regard.
        1913 webster
see also:
to pay attention to to pay one's attentions to 

[2] : WordNet (r) 2.0

attention
     n 1: the process whereby a person concentrates on some features
          of the environment to the relative exclusion of others
          syn: attending ant: inattention
     2: the work of caring for or attending to someone or something;
        "no medical care was required"; "the old car needed
        constant attention" syn: care, aid, tending
     3: a general interest that leads people to want to know more;
        "she was the center of attention"
     4: a courteous act indicating affection; "she tried to win his
        heart with her many attentions"
     5: the faculty or power of mental concentration; "keeping track
        of all the details requires your complete attention"
     6: a motionless erect stance with arms at the sides and feet
        together; assumed by military personnel during drill or
        review; "the troops stood at attention"
see also:
attending inattention care aid tending 

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

115 moby thesaurus words for "attention":
   nb, tlc, absorption, acclaim, act of courtesy, acuity, acuteness,
   agility, alertness, amenity, anticipation, application, assiduity,
   attentions, attentiveness, audibility, audience, audition,
   aural examination, aural sense, auscultation, awareness, benignity,
   brightness, bugging, care, carefulness, caution, circumspection,
   circumspectness, civility, cognizance, concentration, concern,
   conference, consciousness, considerateness, consideration,
   courtesy, debate, deference, deliberation, devoirs, diligence,
   distinction, duties, eager attention, ear, eavesdropping, egards,
   electronic surveillance, engrossment, examination by ear, favor,
   favorable attention, forethought, gallantry, graceful gesture,
   hearing, heed, heedfulness, heeding, homage, honor,
   hushed attention, immersion, industry, intentness, interview,
   keenness, kindliness, limelight, listening, listening in,
   loving care, mark, mind, mindfulness, nimbleness, note, notice,
   notoriety, observance, observation, polite act, preparedness,
   prominence, promptitude, promptness, publicity, punctuality,
   quickness, rapt attention, readiness, regard, regardfulness,
   regards, remark, respects, reverence, sedulity, sedulousness,
   sense of hearing, sensibility, sharpness, sleeplessness, smartness,
   solicitude, study, tender loving care, thoughtfulness, tryout,
   urbanity, wakefulness, wiretapping

Attention >> A Words
Attention, definition of term: Attention
attention_pag1.html

Attention Defic >> A Words
Attention Defic, definition of term: Attention Defic
attention+defic_pag1.html

Pay Attention >> P Words
Pay Attention, definition of term: Pay Attention
pay+attention_pag1.html