Translation

• good friend
• (slang) a visit from Aunt Flo (menstrual period)

Examples

• 我有几个好朋友。
  I have several good friends.
• 我和玛莉成了好朋友。
  Mary and I became good friends.
• 我和一个外国的学生做了好朋友。
  I made friends with a student from abroad.
• Tom 和 John 是好朋友。
  Tom and John are good friends.
• 我和他从小就是好朋友了。
  He and I have been good friends since we were children.