(p. 188) ōn̐cā, ōn̐chā (chiefly coll.) worthless or bad; inferior; contemptible; base, mean; good-for-nothing. 7)

(p. 189) ōjhā a quack professing to have (supernatural) power of curing snakebites and other morbidities; an exorcist. 4)

(p. 189) ōdana food; meal; rice; boiled rice. 20)

(p. 188) ōkhāna that or yonder place or region. 16)

(p. 188) ōi that; yonder.  adv. there.  int. expressing mild regret for negligence, lapse of memory etc.; ah, ah me (ওই যা). 4)

(p. 189) ōṭakānō, uṭakānō search clumsily and hastily; look for something hurriedly; rummage. 5)

(p. 188) ō2 that or yonder person or creature or thing, a person or creature or thing in question, he, she, it.  a. that immediately preceding, last (ও মাসে). adv. too, also, moreover (সে খাবেও); even (নামও শুনিনি).  con. and.  int. expressing; a call, recollection, amazement, pity etc.; holla, ho; ah, oh. 3)

(p. 189) ōḍ়mbā a spendthrift. 14)

(p. 188) ōkaḍ়ā a variety of herb or its fruit or leaf (when this is rubbed on the skin one gets a terrible itching sensation). 9)

(p. 189) ōṣadhi, ōṣadhī a plant that dies after bearing fruit but for once. 52)

(p. 188) ōkhānakāra of that place or region. ওখানে adv. there. 17)

(p. 188) ō1 the tenth vowel of the Bengali alphabet. 2)

(p. 189) ōṭhabasa, ōṭhabōsa act of sitting down and standing up alternately and repeatedly (as a punishment or physical exercise). 8)

(p. 188) ō the mystic sound denoting the Hindu trinity; the origin or root of all sounds; the symbol representing the Supreme Being. ওঁকার, ওঙ্কার, ওংকার n. the sound ওঁ (cp. chest-note). 5)

(p. 189) ōdhāra that side or extremity or region. 21)