Definition of Tom noun from the Oxford Advanced American Dictionary

Tom

noun
/tɑm/
 
 
IDIOM

any/every Tom, Dick, or Harry

/ˌtɑm ˌdɪk ər ˈhæri/
 
(usually disapproving) any ordinary person rather than the people you know or people who have special skills or qualitiesWe don't want any Tom, Dick, or Harry using the club bar.any Tom, Dick, or Harryevery Tom, Dick, or Harry