corpuscle corpuscle /ˈkɔrpəsəl/

noun

1. Either of two types of cells (erythrocytes and leukocytes) and sometimes including platelets  ( blood cell , blood corpuscle , corpuscle )
   either of two types of cells (erythrocytes and leukocytes) and sometimes including platelets
   
2. (nontechnical usage) a tiny piece of anything  ( atom , corpuscle , molecule , mote , particle , speck )
   (nontechnical usage) a tiny piece of anything
     The scientist observed the movement of particles under a microscope.
   The scientist observed the movement of particles under a microscope.