definition of
upkeep

[1] #1 upkeep n. [care, maintenance] activity involved in maintaining something in good working order; "he wrote the manual on car care". wn

[2] #2 upkeep n. [sustenance, sustentation, sustainment, maintenance] 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