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.
rincon definition: An interior spot; a nook; ergo, an angular recess or hollow fold in a mountain, river, cliff, or even the love.; In actual geography, a reÃ«ntrant place in an escarpment; an alcove.