Headache/ˈhedeɪk/ Definition 1 of 2Pro Tip 1/3Literal Meaning Refers to actual physical discomfort in the head, not metaphorical issues. The loud music gave me a headache. Pro Tip 2/3Intensity Varies Can range from mild discomfort to severe pain; context may hint at severity. This mild headache is annoying. Pro Tip 3/3Common Affliction A headache is a common condition that everyone understands and can sympathize with. She couldn't focus because of her headache.