n. | 1. | Pain in the head; cephalalgia. |
Noun | 1. | headache - something or someone that causes anxiety; a source of unhappiness; "New York traffic is a constant concern"; "it's a major worry" |
2. | headache - pain in the head caused by dilation of cerebral arteries or muscle contractions or a reaction to drugs Synonyms: cephalalgia, head ache |