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:
- The US English dictionary