definition of
sustenance

[1] #1 sustenance n. [nutriment, nourishment, nutrition, aliment, alimentation, victuals] a source of materials to nourish the body. wn

[2] #2 sustenance n. [support, keep, livelihood, living, bread and butter] the financial means whereby one lives; "each child was expected to pay for their keep"; "he applied to the state for support"; "he could no longer earn his own livelihood". wn

[3] #3 sustenance n. [sustentation, sustainment, maintenance, upkeep] the act of sustaining life by food or providing a means of subsistence; "they were in want of sustenance"; "fishing was their main sustainment". wn