What is the definition of a titrant solution used in titrants?

Question

What is the definition of a titrant solution used in titrations?

1. The liquid dispensed from the burette?
2. The indicator solution which produces a colour change?
3. The liquid used to wash down the walls of the receiving flask?
4. The liquid in the receiving flask?

Answer 1

1. The liquid dispensed from the burette.

The solution being titrated is the titrand (or analyte)