Definiția și Sensul lui "a stroke of {sth}"

What is the origin of the idiom "a stroke of something" and when to use it?

The idiom "a stroke of something" has its origin in the concept of using a brush or pen to create a single, swift stroke in art or writing. This expression is used to describe situations where something significant or fortunate happens suddenly and unexpectedly, as if achieved in one quick and masterful stroke.