The Collaborative International Dictionary of English v.0.48:

Divinity \Di*vin"i*ty\, n.; pl. Divinities. [F. divinit['e],
   L. divinitas. See Divine, a.]
   1. The state of being divine; the nature or essence of God;
      deity; godhead.
      [1913 Webster]

            When he attributes divinity to other things than
            God, it is only a divinity by way of participation.
                                                  --Bp.
                                                  Stillingfleet.
      [1913 Webster]

   2. The Deity; the Supreme Being; God.
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            This the divinity that within us.     --Addison.
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   3. A pretended deity of pagans; a false god.
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            Beastly divinities, and droves of gods. --Prior.
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   4. A celestial being, inferior to the supreme God, but
      superior to man.
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            God . . . employing these subservient divinities.
                                                  --Cheyne.
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   5. Something divine or superhuman; supernatural power or
      virtue; something which inspires awe.
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            They say there is divinity in odd numbers. --Shak.
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            There's such divinity doth hedge a king. --Shak.
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   6. The science of divine things; the science which treats of
      God, his laws and moral government, and the way of
      salvation; theology.
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            Divinity is essentially the first of the
            professions.                          --Coleridge.
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   Case divinity, casuistry.
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WordNet (r) 3.0 (2006):

divinity
    n 1: any supernatural being worshipped as controlling some part
         of the world or some aspect of life or who is the
         personification of a force [syn: deity, divinity,
         god, immortal]
    2: the quality of being divine; "ancient Egyptians believed in
       the divinity of the Pharaohs"
    3: white creamy fudge made with egg whites [syn: divinity,
       divinity fudge]
    4: the rational and systematic study of religion and its
       influences and of the nature of religious truth [syn:
       theology, divinity]

Moby Thesaurus II by Grady Ward, 1.0:

52 Moby Thesaurus words for "divinity":
   Buddhology, Fatherhood, Mariolatry, Mariology,
   Mercersburg theology, apologetics, canonics, crisis theology, dea,
   deity, deus, deva, devi, devil-god, dialogical theology,
   divineness, doctrinalism, doctrinism, dogmatics, eschatology,
   existential theology, false god, god, goddess, godhead, godhood,
   godlikeness, godliness, godship, hagiography, hagiology,
   heathen god, hierology, idol, immortal, logos Christology,
   logos theology, natural theology, neoorthodox theology,
   neoorthodoxy, pagan deity, patristic theology,
   phenomenological theology, physicotheology, rationalism, religion,
   scholastic theology, secularism, soteriology, systematics,
   the shining ones, theology