As a Noun: 1. The highest point, part or surface of something. English = top. 2. The highest point, part or surface of something, especially of a room or a container that is covered and viewed from the inside; the inside upper surface of a covered space or a container. As a Verb or Adjective: 1. To be located at the highest point, part or surface of something. English = (be) at the top. 2. To be located just under the inside of the top surface of a covered space or a container. 3. To rise to the top of a covered space or a container, that is to just under the inside of the top surface.