Definitions of sustenance

1. a source of materials to nourish the body

2. the act of sustaining life by food or providing a means of subsistence; " they were in want of sustenance"; " fishing was their main sustainment"

3. Act of maintaining; that which supports life; food; maintenance or support.

4. That which sustains: maintenance: provisions.

5. Maintenance; food; nourishment.

6. The act or process of sustaining; also, subsistence; food.

7. Support; maintenance; that which supports life; food. See Sustain.

8. Support; food; victuals.