n.

1. 标题，题目
2. 页首文字；信头
3. 【航】航向
4. 用作顶端的东西

n.

1. a title at the head of a page or section of a book.
2. a direction or bearing.
3. the top of a curtain extending above the hooks or wire by which it is suspended.
4. a horizontal passage made in preparation for building a tunnel.
   ▸Mining  another term for drift.