ˈheˌdāk sometimes -_dik or -_dēk noun
Etymology: Middle English hedache, from Old English hēafodece, from hēafod head + ece, æce ache — more at head , ache
1. : pain inside the head : cephalalgia
2.
[so called from the effect of their odor]
: any of several poppies
3. : a vexatious situation : a baffling problem : a source of trouble or worry
the lack of funds for financing the educational needs of our communities sooner or later proves to be the principal headache — C.A.Herter