Dictionary definition · rash
noun
- any red eruption of the skin
- a series of unexpected and unpleasant occurrences"a rash of bank robberies"
adjective
- imprudently incurring risk"do something rash that he will forever repent"
- marked by defiant disregard for danger or consequences"foolhardy enough to try to seize the gun from the hijacker"
Source: Open English WordNet (CC BY 4.0).