crinkum-crankum Syllabification: (crin·kum-cran·kum)Pronunciation: /ˌkriNGkəm ˈkraNGkəm/Definition of crinkum-crankum noun archaic elaborate decoration or detail. Origin: mid 17th century: fanciful reduplication of the nouns crank1 and crank2crinkum-crankum in other Oxford dictionaries Definition of crinkum-crankum in the British & World English dictionary