Needy (4)
'needy' is the definition.
(similar in meaning)
This is all the clue.
(Other definitions for poor that I've seen before include "'It's a . . . . heart that never rejoices'" , "Impoverished" , "Indigent or substandard" , "Penniless" , "Unsatisfactory or in need" .)
'needy' is the definition.
(I know that needy can be written as indigent)
This is the entire clue.
(Other definitions for indigent that I've seen before include "Needy, poverty-stricken" , "poor fellow" , "Poor and needy" , "Impoverished, destitute" , "Badly off" .)