Verb n. : A word; a vocable.

Verb n. : A word which affirms or predicates something of some person or thing; a part of speech expressing being, action, or the suffering of action.

Example:
What Verb or phrasal Verb is the opposite of "take off" (for plane)?.. land or put down?

Taxonomy
valency, verbs, languages, English, free encyclopedia, participle, English verbs, the action, passive participle, tense, gender, Types of verbs, verbal nouns, part of speech, objective, Impersonal verbs, subject and object, inflected.

Defination from the web:
verb is a word (part of speech) that usually denotes an action (bring, read), an occurrence (decompose, glitter), or a state of being (exist, stand). Depending on the language, a verb may vary in form according to many factors, possibly including its tense, aspect, mood and voice. ...