• Bengali Word জ্যেষ্ঠ English definition (adjective) 1 eldest: জ্যেষ্ঠপুত্র. 2 elder: জ্যেষ্ঠভ্রাতা. 3 older; senior: বয়োজ্যেষ্ঠ. জ্যেষ্ঠতাত (noun) elder brother of one’s father. জ্যেষ্ঠবর্ণ (noun) the highest caste among Hindus; the Brahmins. জ্যেষ্ঠা (feminine) = জ্যেষ্ঠ. জ্যেষ্ঠাধিকার (noun) the right by which the eldest son succeeds to his father’s real estate (as prevalent among certain people); primogeniture.