front door

noun6

1. •
   The door at the main entrance to a building or house, normally fronts onto a street.

   • You'll find a light switch inside the front door on the left.
2. •
   The entire main entrance to a building or house.
3. •
   The habitual or designated main entrance to a room that has more than one door.

   • Entry is through the toilet's front door.
4. •
   The normal portal page to a website.
5. •
   (slang) vagina or penis, as a means of sexual intercourse, contrasted with the anus or "back door"
6. •
   The path of a pitch which starts inside and then slides over the plate.

   • His front door slider is hard to handle.