Worn-out, run-down, or shabby (used colloquially for clothes, buildings, vehicles, etc.).
このジャケット、古くてぼろいけど思い出があるから捨てられない。
This jacket is old and shabby, but I can't throw it away because it has memories.
彼の車はボロいが、まだ毎日動いている。
His car is beat-up, but it still runs every day.
そのアパートは外壁がはがれていて、かなりぼろい状態だ。
That apartment's exterior is peeling; it's in a pretty run-down state.
ぼろい家具ばかりの部屋はどうしてもみすぼらしく見える。
A room filled with shabby furniture inevitably looks miserable.