n 1  cap  :  the type genus of the family Pediculidae that includes the body louse (P. humanus corporis) and head louse (P. humanus capitis) infesting humans  2  pl  pe*dic*u*li  or  pediculus  :  any louse of the genus Pediculus .
 
 
 
Similar sounding terms:  pe·dic·u·lous 
 
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