pain point
n.— «Digital “is recognizing that security for corporations using the Internet is a major pain point right now.…But the dilemma is that there is a conflict between the amount of security you provide and the flexibility you give to users. It does limit functionality.”» —“Digital helps tighten Internet security” by Gary H. Anthes ComputerWorld May 16, 1994. (source: Double-Tongued Dictionary)
Further reading
A physician in Blowing Rock, North Carolina, shares some of the vocabulary of his patients from Appalachia. There, a misery is anything painful, such as a misery in my jaw if they have a painful tooth or a misery in my back if they have lumbar pain...
If you eat ice cream too quickly, the painful result is called an ice-cream headache, a cold headache, or brain freeze. But if you’d feel better using the medical term for it, it’s another mouthful: sphenopalatine ganglioneuralgia. This...