Definition of tykes:
(n) :
(colloquial) A small child, especially a cheeky or mischievous one.
(n) :
(dialectal) A mongrel dog.
(n) :
(Canada) Designating an initiation level of sports competition for young children.
(n) :
(UK, informal) A person from Yorkshire; a Yorkshireman or Yorkshirewoman.
(n) :
(dated, chiefly British) An uncultured, crude and unrefined or uncouth ill-bred person.
(n) :
(Australia, New Zealand, informal, derogatory) A Roman Catholic.