What does the idiom "Until the cows come home" mean?

• The idiom "until the cows come home" means - For a very long time.

• until the cows come home (idiom)
English Meaning: A phrase used to describe something that will continue for an indefinite or very long time.
Bangla Meaning: কোনো কিছু অসীম বা দীর্ঘ সময় ধরে চলতে থাকা।

Example Sentence:
- She could argue about that topic until the cows come home, but she still won't change my mind.

Source:
1. Cambridge Dictionary.
2. Accessible Dictionary by Bangla Academy.