과거의 어느 시점에 속했던; 이전의.
Belonging to a past time; former.
예문:
"The erstwhile champion struggled to keep up with the younger athletes."
"She met her erstwhile business partner to discuss a new venture."
"The building, an erstwhile factory, has been converted into luxury lofts."
과거의 어느 때에; 예전에는.
In the past; at a former time.
예문:
"The city, erstwhile known for its textile industry, is now a tech hub."
"He was erstwhile a man of great influence in the royal court."