What does "and/or" mean?

Joins two alternatives to mean either or both; indicates that inclusive or is meant where or alone might be taken to mean exclusive or.

And/or

/ˈændɔː(ɹ)/ conj

conj ·Rare ·Advanced level

Conjunction

1
Joins two alternatives to mean either or both; indicates that inclusive or is meant where or alone might be taken to mean exclusive or.
"List three personal and/or business references."

"List three personal and/or business references."