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