American Dictionary

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Definition rash in American English

rash noun

[countable] noun
/ræʃ/
1

an area of small red spots on your skin, caused by an illness or an allergic reaction to something that you have touched, eaten, etc.

Example

diaper/poison ivy/heat rash

Synonyms and related words
2

a lot of instances of a particular thing taking place in a short period of time, especially something unpleasant

Example

Local police are investigating a rash of burglaries in the area.

Synonyms and related words
3

to behave towards somebody in a very affectionate way

Example

She was all over him like a rash last week.

Definition rash in American English