What is what does onb mean?

As an AI language model, I do not have access to the specific context in which "onb" is being used. However, here are a few possible interpretations of "onb":

1. In the context of computers and technology, "onb" may be an abbreviation or acronym for various terms such as "onboard," "on button," or "OneNote Batch."

2. "ONB" could also refer to various companies or organizations, such as Ontario Northland Railway, Onepath Networks, or the Otsego Northern Catskills Board of Cooperative Educational Services.

3. "ONB" could also be an abbreviation for a personal or colloquial term that is not commonly known, perhaps specific to a certain group of people.