The Collaborative International Dictionary of English v.0.48:

Globule \Glob"ule\, n. [L. globulus, dim. of globus globe: cf.
   F. globule.]
   1. A little globe; a small particle of matter, of a spherical
      form.
      [1913 Webster]

            Globules of snow.                     --Sir I.
                                                  Newton.
      [1913 Webster]

            These minute globules [a mole's eyes] are sunk . . .
            deeply in the skull.                  --Paley.
      [1913 Webster]

   2. (Biol.) A minute spherical or rounded structure; as blood,
      lymph, and pus corpuscles, minute fungi, spores, etc.
      [1913 Webster]

   3. A little pill or pellet used by homeopathists.
      [1913 Webster]

WordNet (r) 3.0 (2006):

globule
    n 1: a small globe or ball

Moby Thesaurus II by Grady Ward, 1.0:

92 Moby Thesaurus words for "globule":
   Rh factor, Rh-negative, Rh-positive, Rh-type, Rhesus factor,
   air bubble, antibody, antigen, arterial blood, ball, balloon,
   bladder, bleb, blister, blob, blood, blood bank, blood blister,
   blood cell, blood count, blood donor, blood donor center,
   blood group, blood grouping, blood picture, blood platelet,
   blood pressure, blood serum, blood substitute, bloodmobile,
   bloodstream, boll, bolus, bubble, bulb, bulbil, bulblet, bulla,
   circulation, clinical dextran, dextran, driblet, droplet,
   ellipsoid, erythrocyte, fever blister, geoid, globe, globelet,
   globoid, globulin, glomerulus, gob, gobbet, gore, grume, hematics,
   hematologist, hematology, hematoscope, hematoscopy, hemocyte,
   hemoglobin, hemometer, humor, ichor, isoantibody, knob, knot,
   leukocyte, lifeblood, neutrophil, oblate spheroid, opsonin, orb,
   orbit, orblet, pellet, phagocyte, plasma, plasma substitute,
   prolate spheroid, red corpuscle, rondure, serum, soap bubble,
   sphere, spheroid, spherule, type O, venous blood,
   white corpuscle