"pinhead"的定义和意义

What is a "pinhead"?

A pinhead is the small top part of a pin, found at the opposite end of the sharp point. It makes the pin easier to handle, preventing it from slipping through the fabric and allowing for easy removal. Pinheads are typically made from materials like metal, plastic, or glass and can come in different shapes, such as round, flat, or decorative. They also vary in size and color, sometimes being used for both functional and aesthetic purposes in sewing and crafting projects.