A pain or ache in the head. / (figuratively) A nuisance or unpleasant problem.

plural of headache

Having a tendency to cause a headache.

Obsolete form of headache.

plural of cluster headache

(pathology) An extremely painful, cyclical and unilateral headache.

plural of sexual headache

(medicine, neurology) A rare type of headache that occurs during sexual activity, including masturbation or orgasm.

plural of headache vine

Clematis glycinoides, a climbing shrub of the family Ranunculaceae, found in eastern Australia and in New Caledonia.