meaning of sustenance
1.  The act of sustaining; support; maintenance; subsistence; as, the sustenance of the body; the sustenance of life. 
2.  That which supports life; food; victuals; provisions; means of living; as, the city has ample sustenance. 
3.  the act of sustaining life by food or providing a means of subsistence; "they were in want of sustenance"; "fishing was their main 
						">sustainment"
						 
