I have found this word a few times in the Satmar Rebbe's Divrei Yoel (such as here, for example, in Parshat Metzora'). I am assuming that it is an acronym, rather than a transliterated Yiddish word, but I cannot work out its meaning. The passage to which I have linked commences as follows:
והבוכ"ע יעזור שנזכה לטהרת הלב ולקבל עול מלכות שמים
May the [??] enable us to achieve purity of heart, that we may accept the yoke of the kingdom of heaven.
Can anybody help?