Verb (noun)

1. A word or phrase that describes an action, state, or occurrence, and forms the main part of the predicate of a sentence.
2. A word or phrase that indicates an action, state, or occurrence.

Origin:

Late middle english: from latin verbum "word".

Examples:

1. The word "run" is a verb.
2. Verbs are used to indicate an action or state in a sentence.
3. Verbs are a fundamental part of grammar and language.
4. The sentence "The dog barked" has the verb "barked".
5. In the sentence "He is playing", the verb is "playing".