This is the dhyānamantra of Ḍāmarabhairavī as per Śrīvidyarṇava Tantra (who is worshipped as the presiding deity of the Navārṇa mantra by Bengali Hindus). It is translated as follows
Remember Her who is respected in Uttarāmnāya, whose complexion is (as red) as the bandhuka (Pentapetes phoenicea) flower, who is seated upon a Pañcamuṇḍa seat (an earthen platform built upon 5 skulls of specific characteristics used by purṇābhiṣikta sādhakas of Kālīkula for performing austerities), whose crown is illuminated by the gem in the form of the lunar digit, who wears a garland of human heads, who has 3 eyes, who wears red garments, whose uplifted breasts resemble pitchers, who holds in Her hands a book, a string of rosary & the mudrās of blessing & fearlessness.