Related Clues:

• Slender threads in light-bulbs
• If it turns sad, one may make light of them
• Even if they turn sad, they may still be glowing
• They make light of their sorrows at last
• If in turn they sound sad, one may make light of them
• If it turns and mourns, it makes them light
• They're glowing if they turn up for sorrow
• If they turn sad, one may make light of them
• If they turn sad, make light of them
• If it's the turn of sorrowful sounds they may be light ones
• Flame isn't put out - they glow in the dark
• If mantles are replaced, these may replace them
• Thin wires in light bulbs