Focus on the pronunciation of head
English definition of “head”
head noun [C]
be/get in over your head › to be involved in something that is too difficult for you to deal with: He denied fraud saying he was a businessman who just got in over his head.
get your head round/around sth › to manage to understand something: It's hard to get your head round these new tax laws.
have a (good) head for sth › to be very good at something: She had a good head for business.
put our/your/their heads together › to work together with others to solve a problem or deal with a difficult situation: If we want to remain competitive, we'd better put our heads together and come up with new ways of reaching our market.