Possible Clues:

• Finally close business or tighten watch spring (4, 2)
• Close company
• Close down when gale is blowing
• Conclusion
• Tease in conclusion
• End
• Conclude having this is a frightening experience
• Close a window to annoy
• 'Watches used to get it to a frightful extent (4,2)'
• Scent increased in price? That's a joke