or BrE AmE ɔː AmE \ ɔːr —In American English ɔːr is a strong form, paired with a weak form ə r . In British English, however, ɔː normally has no weak form: there is only an occasional weak form ə , used chiefly in set phrases.
OR
Meaning of OR in English
Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012