Incriminate is a term which refers to a statement made by a person admitting to the fact that he or she has committed a crime. The statement can also include a name and other information of a person who has committed a crime.
Constitutionally no person, department, or agency can force a person to reveal information which would lead to incriminating him or herself. So, a person being interrogated can decline to answer a question which can put them in such a situation.This is often referred to as "pleading the Fifth" in reference to the Fifth Amendment.