English to Arabic Tech/Engineering Construction / Civil Engineering Design

Dear all,

What is the meaning of the term "soffit track" in:

{They used short screws when fastening this soffit track to the ceiling. That is why the result was bad.}

I just got this:
http://www.almaany.com/home.php?language=arabic&word=soffit&...

but still can't get the meaning of the term.

Thanks a lot.