headache
n. countablen. a pain in your head. It can also mean a problem that is very annoying or difficult to deal with.
n. a continuous pain in the head; figuratively, a persistent source of annoyance or a complex problem. Often used with the verb 'have' or 'get'.
I have a bad headache and need to rest.
The new tax laws are a real headache for small business owners this year.
While the physical headache subsided after an hour, the logistical headache of rescheduling the entire conference remained for the rest of the week.
From Middle English hevedeche, from Old English hēafodeċe, equivalent to head + ache.
Commonly used with the indefinite article 'a' even when referring to a general state of pain.
I have headacheI have a headacheIn English, you must use the indefinite article 'a' when referring to this specific physical ailment.