Related Clues:

• Part of a stair
• Bit of a step up?
• No lie about the master turning up
• Choir stand
• Is up for Taliban leaving libertarians
• One waking up
• Stair face
• Vertical section between treads
• Vertical pipe; staircase part
• Is hanging in behind - not a person advancing position?
• Vertical upward pipe
• A famous footballing plumber
• Vertical between staircase treads
• One getting up, an essential to flight
• Pipe for upward flow