(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) ōstāda a trainer, a music-master or music-teacher; a master artist or artisan. a. skilled, expert. ওস্তাদি n. efficiency, skill, mastery; cleverness; an attempt to parade one's skill or mastery, bravado; uncalled-for act of coming forward to help; officiousness. a. pertaining to a trainer or music-master or master artist or master artisan. ওস্তাদি করা v. to try to parade one's skill or mastery; to come forward uncalled-for to help; to be officious. 59)

(p. 189) ōṭhā to rise; to get up; to climb or ascend (গাছে ওঠা, পাহাড়ে ওঠা); to get in (গাড়িতে ওঠা). See also the older form উঠা । 9)

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

(p. 189) ōẏāhābi a follower of Abdul Wahab; a Muslim religious reformer; a group of Muslim socio-religious reformers. 34)

(p. 189) ōrē coll. & poet. form of ওকে । int. used in addressing or apostrophizing. 40)

(p. 189) ōlana2 a plumb-line, a plummet (also ওলনদড়ি). a. vertical. 44)

(p. 189) ōlāna udder (of cattle etc.) 50)

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

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

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

(p. 189) ōjōguṇa (rhet.) ornateness and vigour of style. 2)

(p. 189) ōlandāja Dutch. a. a Hollander, a Dutch; the Dutch language. 45)

(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) ōsāra breadth, width; also dial. variant of ওয়াড় । 57)