Definition of "Poor" :
noun: people without possessions or wealth (considered as a group)
"The urban poor need assistance."
adjective: deserving or inciting pity
"Oh, you poor thing."
adjective: having little money or few possessions
"Deplored the gap between rich and poor countries."
adjective: lacking in quality or substances
"A poor land."
adjective: characterized by or indicating poverty
"The country had a poor economy."
adjective: of insufficient quantity to meet a need
"A poor salary."