What part of the dictionary will tell you how a word is used in sentence?

The part of the dictionary that tells you how a word is used in a sentence is called the "usage" or "example" section.

Here's what you can typically find there:

* Example sentences: These show how the word is used in context, providing real-world examples of its usage.

* Grammatical information: You might find information about the word's part of speech (noun, verb, adjective, etc.) and how it functions in a sentence.

* Phrases and idioms: Some dictionaries will list common phrases and idioms that use the word, giving you a sense of its typical collocations.

* Regional variations: If the word has different meanings or uses in different regions, the dictionary might note those variations.

By studying the usage section, you can gain a better understanding of how the word is actually used in language, making your writing and speaking more accurate and natural.