tramline

• tram line

tram +‎ line

tramline (plural tramlines)

1. The rails that a tram runs on.
2. (tennis, Britain) Either of the two pairs of sidelines marked on a tennis court which mark the outside of the singles and doubles playing areas.
3. A scratch on a film, usually vertical, that extends through multiple frames.
   • 1984, Movie Maker, Volume 18, Issue 2, page 47:

     The tramline is therefore much less obvious on the screen. Also, if the scratch is on the base (i.e., on the back of the film), then it will not be in sharp focus.

• terminal