There are different definitions for the work look. Focusing the eyes on a particular object. Gazing at an object, to have an appearance.It is also a visual search.
the index
look up the definition
You find the word in a dictionary and you can look up the word in an on line dictionary.
If you go on to Google and type in "define __" it gives you the definition. Or you can try dictionary.com
If you have the meaning or definition then you will have a synonym of the word. Look up that synonym in a thesaurus.
I believe that is a Spanish word -look under Spanish .
"castellanos" is not a word in English language, -look in Spanish.
look at me, pay attention
Definitions means a meaning of a word. if you look something up in a dictionary you will find an example of a definition.
To find the definition of an unfamiliar word in a scholarly dictionary, you should look at the beginning of the entry for the word where the definition is usually provided. If the word is still unclear, you can also look for context clues within the dictionary entry or consult a glossary, index, or table of contents for additional information.
Look up the definition of the word "well."
Look up the word avoid, and apply its definition.