What do u mean by dictionary?
a book, optical disc, mobile device, or online lexical resource (such as Dictionary.com) containing a selection of the words of a language, giving information about their meanings, pronunciations, etymologies, inflected forms, derived forms, etc., expressed in either the same or another language; lexicon; glossary.
What is the another meaning of mean?
‘ unkind, nasty, spiteful, foul, malicious, malevolent, despicable, contemptible, obnoxious, vile, odious, loathsome, disagreeable, unpleasant, unfriendly, uncharitable, shabby, unfair, callous, cruel, vicious, base, low. informal horrible, horrid, hateful, rotten, low-down.
Why do we use dictionary?

You can use a dictionary to look up the meaning of any words that you don’t understand. A good dictionary can help you understand your subject better, improve your communication and improve your grades by making sure you are using words correctly.
When a person is mean?
If someone is being mean, they are being unkind to another person, for example by not allowing them to do something. If you describe a person or animal as mean, you are saying that they are very bad-tempered and cruel.
Is reading dictionary good?

Dictionaries can be really helpful when you are reading because they help you find out the meaning of words you don’t know. However, using a dictionary too much can cause problems with your reading skills.
What is a dictionary entry called?
1. dictionary entry – the entry in a dictionary of information about a word. lexical entry. headword – a word placed at the beginning of a line or paragraph (as in a dictionary entry) citation form, entry word, main entry word – the form of a word that heads a lexical entry and is alphabetized in a dictionary.
What does son of ab * * * * mean?
: a person (especially a man) who you strongly dislike or hate. —used to express surprise, disappointment, anger, etc. : something that is very difficult or unpleasant.