Possible Clues:

• Knot for fastening a line temporarily to a post
• *Camper's knot
• Type of knot
• About to marry without affection? I'll say not!
• Means to form attachment - not at eighteen? - involving affection
• Result of interlacing affection in chapter with irritation
• It might secure a piece of garlic to thumb?
• Split pine contains hard knot
• One of 16 churches: the first welcomes love, the second follows it
• It's used to tie a little garlic to thumb