Definitions of boy:

• noun:   (ethnic slur) offensive term for Black man

  Example: "Get out of my way, boy"

• noun:   a friendly informal reference to a grown man

  Example: "He likes to play golf with the boys"

• noun:   a youthful male person

  Example: "The baby was a boy"

• noun:   a male human offspring

  Example: "His boy is taller than he is"