Having been through the mill is an idiomatic expression that conveys a person or object's experience of a particularly difficult or challenging situation or series of events. Derived from the literal meaning of going through a mill, which refers to the process of grinding or crushing grain or other materials, this phrase figuratively implies undergoing a process of intense stress, pressure, or hardship.
When someone has been through the mill, it suggests that they have faced numerous trials, setbacks, or adversities that have tested their resilience, character, or abilities. This experience often leaves a lasting impact, shaping their outlook on life or providing them with invaluable lessons and knowledge. It implies that the person has confronted and triumphed over adversity or has successfully overcome obstacles through sheer determination and perseverance.
Similarly, the phrase can be applied to objects or things that have been subjected to rigorous tests or harsh conditions, resulting in their endurance or durability being proven. It suggests that the object or thing has undergone extensive usage, scrutiny, or scrutiny, which has made it stronger or more reliable.
Overall, the phrase "having been through the mill" encapsulates the notion of someone or something that has faced significant challenges, whether physical, emotional, or intellectual, and has emerged from the experience stronger, wiser, or more seasoned.
