Definition
A 'sixpenny nail' is an old-fashioned term for a nail of a specific size. The 'penny' designation (denoted by 'd', from the Roman coin denarius) indicates the nail's length and weight, and thus, originally, its price per hundred. A sixpenny nail isn't actually worth six pennies today; it's a standard unit of measurement from the past. Think of it like saying a 'foot' to measure something—it's just a unit. While not commonly used in modern hardware stores, knowing the term gives you a glimpse into history. 🔨