It's a common and powerful word used to express sadness, grief, or emotional pain.
Here are some examples of how it's used:
* "Ohi athru naal bhariyan ne" (ਉਹ ਅੱਥਰੂ ਨਾਲ ਭਰੀਆਂ ਨੇ) - "They are filled with tears."
* "Usne apne athru rukna chahe" (ਉਸਨੇ ਆਪਣੇ ਅੱਥਰੂ ਰੋਕਣਾ ਚਾਹੇ) - "He tried to hold back his tears."
It's important to note that the pronunciation of "athru" can slightly vary depending on the region and dialect. However, the meaning remains the same.