Used to label an unusually large number of occurrances of a disease or condition in one place. An autism cluster would be an unusually large number of cases of autism in (perhaps) a single locality. Clusters constitute evidence in the search for causes of diseases and conditions.
Top definition. jawn. a word used by Philly cats to describe anything and everything. NY cats interject with the word joint but it doesn't convey the same feelings.
Jawn can be singular; âpass me that jawn.â It can be plural, and in a couple of different ways. âJawnsâ is fine, but you can also modify âjawnâ elsewhere. âYou can say âjawns,â but more often itâs going to be, like, âwhereâd you get them jawn,ââ says Jones.