Definition of they're in English:

they're

Syllabification: they're
Pronunciation: /T͟Her
 
/

contraction

They are.
More example sentences
  • I wonder if he'll complain if they're used against him.
  • The cheapness and ubiquity of plastics, and the problems caused when they're carelessly thrown away, blind us to the utility and versatility of these marvellously mutable materials.
  • If they're asking too many personal questions, it's okay not to answer.

Usage

On the differences between their, they’re, and there, see they (usage).

Definition of they're in:

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Word of the day inamorata
Pronunciation: ɪˌnaməˈrɑːtə
noun
a person's female lover