American Dictionary
Definition poster child in American English
poster child noun
[countable] noun
1
a child with a particular illness or physical problem who is used in a poster advertising the work of an organization that helps children with that illness or problem
Synonyms and related words
2
someone or something that represents a particular quality, idea, or activity
Example
William is a poster child for incompetence.
Example
The farm is a poster child for environmental friendliness.
