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

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

(p. 189) ōstāgara a very efficient or chief artisan or tailor, a master artisan or tailor. 58)

(p. 188) ōkē to him, him. 14)

(p. 189) ōṣṭha (lit.) the upper lip; any of the lips. ̃পল্লব n. lips as attractive and soft as young shoots. ̃পুট n. a cavity formed by contracting both the lips. ̃ব্রণ n. a boil on the lip. ওষ্ঠাকার a. shaped like lips; (bot.) labiate. ওষ্ঠাগত a. that which has neared the lips in order to come out. ওষ্ঠাগতপ্রাণ a. about to die; extremely embarrassed or peeved or irritated. ওষ্ঠাধর n. pl. the two lips-upper and lower. ওষ্ঠ্য a. (gr.) pronounced by the lips, labial. n. (gr.) a labial letter. 55)

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

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

(p. 188) ōgarā a variety of food cooked by boiling rice and pulse together, hotchpotch. 18)

(p. 189) ōẏādā a point of time by or within which something is promised to be paid or given or done; promise. ওয়াদা দেওয়া v. to set a time-limit. 28)

(p. 189) ōrasā wet, moist. 38)

(p. 189) -ōẏālā2 denoting: a trader, a seller, a practitioner, an owner, one in possession of or endowed with etc., -er, -or,ist. fem. ওয়ালি, উলি । 32)

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

(p. 189) ōṭā (coll. & dero.) that, it, he, she. 7)

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

(p. 189) ōhē used in addressing or apostrophizing, hullo, hey. 60)