Why is there no singular form for the word tongs?

That's a good question! You're right, "tongs" is always plural, even when referring to a single object. This is because "tongs" describes a tool that is inherently two-pronged.

Here's why:

* Functionality: Tongs are designed to grip and hold objects using two arms or prongs. The design necessitates the presence of two parts.

* Etymology: The word "tongs" originated in the Old English word "tanga," which itself referred to a two-pronged tool.

* Usage: Throughout history, the word "tongs" has always been used in its plural form. It has become ingrained in the English language this way.

So, while we might refer to a single pair of tongs, the word itself is inherently plural due to its function and historical usage.