flatcap
/ˈflætˌkæp/
noun
- A round, soft cap with a small brim at the front, traditionally worn by men in the UK and Ireland.
- He bought a wool flatcap to keep his head warm during the winter.
- The old man wore a tweed flatcap while walking his dog in the countryside.
- In many movies, detectives and farmers are shown wearing a flatcap.