Related Clues:

• Head of Meteorology differs, first drawing line on her map
• A line on a map joining places of equal temperature
• ''Cold'' or ''warm'' weather region
• Not the back
• Opposite of "back"
• What balloonist might say about black line on weather map
• Lead, as a rock band
• Lads falling off sailboards - it could be the pressure staying on a line
• Wavy line on some maps
• Evidence of pressure therefore in island pub
• Evidence of pressure or bias, strangely
• Theory incorporating different line that's charted to a degree
• Shell corporation, often
• Pressure line from one's pub carrying oxygen
• Cold front line?