Venture debt or venture lending or «venture leasing» is a type of debt financing provided to venture-backed companies by specialized banks or non-bank lenders to fund working capital or capital expenses, such as purchasing equipment. Unlike traditional bank lending, venture debt is available to startups and growth companies that do not have positive cash flows or significant assets to use as collateral. Venture debt providers combine their loans with warrants, or rights to purchase equity, to compensate for the higher risk of default.
(source: http://en.wikipedia.org/wiki/Venture_debt)