Definition of best friend in English:

best friend

Line breaks: best friend

noun

A person’s closest friend: Michael was Frank’s best friend he’s best friends with Eddie within a month we were best friends
More example sentences
  • I've been best friends with this girl practically forever.
  • By then, I had become best friends with a girl at school named Emily.
  • One of my all time best friends and another friend have just had a kid - I've just been sent amazing pictures too.

Definition of best friend in:

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Word of the day animalcule
Pronunciation: ˌanɪˈmalkjuːl
noun
a microscopic animal