• Bengali Word ধ্রুব English definition (adjective) fixed; firm; immovable; unchangeable; constant; permanent; lasting; eternal; sure; certain; deep-seated. (adverb) for sure/certain. (noun) 1 the polar star; polestar; North Star. 2 celestial pole. 3 unchangeable longitude of fixed stars; constant arc. 4 North Pole. 5 post; stake. ধ্রুবক (noun) (mathematics) constant (quantity). 2 (music) = ধ্রুবপদ. ধ্রুবতা, ধ্রুবত্ব (noun(s) constancy; certainty; permanence; surety; firmness. ধ্রুবতারা, ধ্রুব নক্ষত্র (noun(s) = ধ্রুব (1). ধ্রুবপদ (noun) (music) introductory verse of a song refrain; constant note; leit-motiv. ধ্রুব বিশ্বাস (noun) firm faith/belief/conviction. ধ্রুবরেখা (noun) (geography) equator. ধ্রুব লোক (noun) paradise.