Possible Clues:

• Weeping conduit
• Passage for liquid secreted from the eye
• Passage for the liquid secreted from the eye
• Passage for fluid from the eyes
• Small drainage channel fly got out of, we're told
• A crying need for free trade cut
• Trade supply badly cut: it's enough to make you weep
• Crying need?
• Hurry central section in conducting passage conveying emotional response
• Water channel run from the French court