Poor Person
noun
貧乏 is poor, so a poor person is a poor person.
びんぼうにん
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own. Will help to know 貧乏 already.
お前は自分のことを素晴らしいと思っているみたいだけどな、ただの貧乏家族の貧乏人だってことを、よ〜く肝に銘じておくんだな。
You think you’re so great, but bear in mind, you are just a poor person from a poor family!