1. [ noun ] something or someone that causes anxiety; a source of unhappiness
Synonyms: worry concern vexation

"New York traffic is a constant concern" "it's a major worry"

Related terms: negative_stimulus business burden bugaboo worry concern worry
2. [ noun ] (medicine) pain in the head caused by dilation of cerebral arteries or muscle contractions or a reaction to drugs
Synonyms: cephalalgia head_ache
Related terms: ache tension_headache migraine sinus_headache sick_headache histamine_headache
Similar spelling:   head_ache