(p. 188) ōki, ōkī expressing: inquisitiveness, amazement, fright etc., what's that. 13)

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

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

(p. 189) ōrā ṃōṭā, ṃōrā ṃuṭā orang-utan (orang-outang), an ape originally of Sumatra and Borneo. 39)

(p. 189) ōpha expressing amazement, anger, regret, pain, disgust etc.; oh. 23)

(p. 189) ōṭakiśati, ōṭakisti (in chess) a position in which if a particular piece or chessman is moved, the player in question gets a check, and if not moved, that piece or chessman is taken by the adversary. 6)

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

(p. 189) ōra2 his; its. 36)

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

(p. 189) ōpāra the other side or bank (of a river, etc.). 22)

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

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

(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) ōḍra old name of Orissa. 11)

(p. 189) ōlāicaṇḍī the goddess of cholera. 47)