Related Clues:

• Sill neighbor
• Place to hang a mezuzah
• Be stuck with second class post
• One standing by a door
• Supporter's social media entry showing match attendance?
• Window-frame upright
• Vertical post at the side of a door
• Sidepiece of a door
• Reportedly fix frame used in building
• Wedge book upright
• The side piece of a door or window