Related Clues:

• Dear me, it's becoming a bore
• Line crossing centre of sphere
• The longest chord in non-musical circles
• Bore's terrible tirade about compiler
• Line taken by director touring emirate
• With team, ride wildly the distance across
• Circle Line network on which young woman's travelling westbound
• The Circle Line?
• Spoke twice to get measurement?
• Calibre of team? Dire, sadly
• Straight line across a circle through the centre
• Dear me - it disturbed part of the circle
• It's equal to twice the radius
• Planetary measure
• Bore I'm interrupting to put off