An excerpt from a book on database technologies:
A few products are supplied factory-direct, a few are made in-house, and a few may have been bought in a warehouse sale. In other words, a product is not necessarily supplied by a vendor. Therefore, VENDOR is optional to PRODUCT.
It seems that no single dictionary out there has this word listed. A simple Google search has not revealed anything about the word and its usage. But, given the context, I assume this word is being used as an adverb and must mean that products are bought right from their manufactures without the help of a third-party organization such as a retailer or someone like that. Am I correct?