dictionary

Meaning 1

A book or electronic resource that lists the words of a language (typically in alphabetical order) and gives their meaning, or gives the equivalent words in a different language, often also providing information about pronunciation, origin, and usage.

Example sentences:

If you don't know the meaning of a word, look it up in the dictionary.

I couldn't find the word in the dictionary.

You need a dictionary to understand what he's saying half the time.

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