The Rice University Neologisms Database

An urban Caucasian youth; title of address between such persons analogous to ‘brother’ Possible Reason Used: The use of this word is entirely resolved to its use as a Shibboleth. By definition this term is constrained to a very specific in-group of users, urban Caucasian adolescents. Further, use of this term serves as a regional identifier, for it is unlikely that it’s use has extended beyond Monroe County, if it has escaped the city limits of Monroe proper. Thus, the term nucka like many other shibboleths will likely continue to be used by the in-group of said region and demographic until either the term enters mainstream English (and a new colloqium is needed) or the language innovators fail to introduce the term to the next generation of nuckas as they themselves escape the narrow definition of their own Shibboleth.