Leveraged usually means financed with a relatively large proportion of debt.
Leveraged cash flow is the cash flow taking account of debt.
A leveraged company or business is one that is financed by a relatively large amount of debt.
The term 'leveraged' can also be used to refer to any non-zero level of debt finance, not necessarily a high level.
Leveraged is also sometimes known as 'geared' or 'levered'.