گزارش خطا در معنی کلمه 'monkey on one's back'

1 general:: 1. Drug addiction, as in He'd had a monkey on his back for at least two years. [Slang; first half of 1900s] 2. A vexing problem or burden, as in This project has proved to be a monkey on my back? there seems to be no end to it. Both usages allude to being unable to shake off the animal from one's back.