In modern usage, "steal someone's thunder" usually means:

• steal someone's thunder (idiom)
English Meaning: To take away the spotlight or praise that rightfully belongs to someone else.
Bangla Meaning: কারো স্বীকৃতি বা প্রশংসা ছিনিয়ে নেওয়া; কারো কৃতিত্ব কেড়ে নেওয়া।

Example Sentence:
- She stole his thunder by announcing her promotion first.

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