How is nail a verb?

You're right to question that! "Nail" is primarily a noun, referring to a small, pointed piece of metal used for fastening things.

However, "nail" can also function as a verb in a few different ways:

1. To fasten with a nail: This is the most common verb usage.

* Example: "He nailed the picture to the wall."

2. To hit or strike something forcefully: This meaning can be used figuratively.

* Example: "The boxer nailed his opponent with a right hook."

3. To achieve something perfectly: This is an informal, slang usage.

* Example: "She nailed that presentation."

4. To trap or capture something: This is a less common usage, often used in a figurative sense.

* Example: "The detectives finally nailed the criminal."

So, "nail" can be a verb in different contexts, but it's important to understand the context to interpret its meaning.