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.
stun (stÅ­n) tr.v. stunned, stunÂ·ning, stuns 1. To daze or render senseless, as by a blow or loud noise. 2. To stupefy, as with the emotional impact of an experience; astound. n. A blow or shock that stupefies.