One who is a centre of attraction is called -

• "One who is a centre of attraction" is called - Cynosure.

• Cynosure (Noun)
- English meaning: ​A person or thing that is the centre of attention.
- Bangla meaning: দৃষ্টি আকর্ষণে দক্ষ ব্যক্তি; আকর্ষণীয় ব্যক্তিত্ব।

• Other options:
- Mentor: An experienced person who advises and helps somebody with less experience over a period of time.
- Bangla meaning: বিজ্ঞ পরামর্শদাতা।

- Philanthropist: A rich person who helps the poor and those in need, especially by giving money.
- Bangla meaning: জনহিতৈষী ব্যক্তি।

- Stoic: A person who is able to suffer pain or trouble without complaining or showing what they are feeling.
- Bangla meaning: যিনি অভিযোগবিহীনভাবে যন্ত্রণা ও বেদনা সইতে পারেন।

Source: Merriam & Webster Dictionary, Oxford Dictionary, Accessible Dictionary.