Rare standalone noun. Mostly encountered in classical or formal contexts. In modern Japanese, the meaning 'bad habit' is more commonly expressed by 悪癖 or 悪習, and 'harm' by 害.
In old documents, 弊 can refer to a bad habit.
I will explain about our company's products.
Our store is currently holding a sale.
our company; our firm
exhaustion; fatigue; weariness · impoverishment; financial exhaustion; ruin
harmful effect; abuse; evil practice
misleading wording; faulty expression; misunderstanding from poor wording
resulting evil; holdover; lingering harm
Standard kanji form for both the rare noun sense and the humble prefix sense.
The kanji 弊 originally depicted a worn-out garment, conveying the idea of something broken or corrupt. The humble prefix usage developed from the sense of 'my/our humble...'.