ネック

技術者の不足が当社の発展の最大のネックだ。

The shortage of engineers is the greatest bottleneck to the development of our company.

俺(おれ)はそんなこの町が好(すき)きだ。石段とかが多いのはネックだが・・・。

I like this town as it is. Although, there being so many stone stairs is a bit of a pain...