noun

• The act or process of (physically or figuratively) attaching.
• A strong bonding with or fondness for someone or something.
• A dependence, especially a strong one.
• A device attached to a piece of equipment or a tool.
• The means by which something is physically attached.
• (computing) A file sent along with a message, usually an email.
• (law) Taking a person's property to satisfy a court-ordered debt.
• (meteorology) The act or process by which any (downward) leader connects to any available (upward) streamer in a lightning flash.