Is there an English word describing the action hitting something with your head?
For example: to hit someone with your head; the action of goats hitting each other with their heads.
When two people are fighting, and one hits the other with their forehead, this is often called a "headbutt." Is this the sort of situation that you're considering?
As mentioned, headbutt is the common term. But a neat non-compound word with the same meaning is bunt.
verb (used with object)
- (of a goat or calf) to push with the horns or head; butt.
On't swede. Which means on the head. Usually used in football, however can be used to suggest the use of you head to hit something.
Another sheep-related one is tup, though that might be considered slang. It's in Late Night on Watling Street where two lorry drivers fight, IIRC.