Possible Clues:

• Tendril of smoke
• Bit of a shock?
• Curl of a cloud
• Thin strand in kiwi's plumage
• Flimsy lock
• Thin streak, as of smoke
• Thin bit of smoke
• A little bit hazy with middle bit of Crispa and Plodge's 17
• Faint trace, as of smoke
• Gauzy strand