headache

noun

1. A pain or ache in the head.

   “I have a splitting headache after that party last night.”

   “I advise you to take some painkillers for the headache, it's probably nothing serious.”

   “Sometimes on television they tell you a product is "good for headaches." I don't want something that's good for headaches. I want something that's bad for headaches. And good for me.”

   “CNN spoke recently with several Conyers residents who said they still have blurry vision, shortness of breath, throat irritation or chronic headaches since the chemical plant fire.”

2. (figuratively)A nuisance or unpleasant problem.

   “The clumsy filing system has been a huge headache.”

   “Bogland now dominates the scene and the construction engineers must have suffered many a headache in seeking to secure a firm foundation.”