As a Noun:
1. An account of what a person, thing or event is like, especially what it looks like. English = description.
2. A statement giving the meaning of a word or a sign, especially in a dictionary. English = definition
As a Verb or Adjective:
1. To say what a person, thing, or event is like, especially what it looks like. English = describe.
2. To say exactly what something is or to say exactly what a word or a sign means. English = define
3.