Plain English Meaning
A book published by the FAA that lists exactly what you need to know and be able to do to pass a checkride for a specific pilot certificate or rating.
Full Definition
An FAA publication that specifies the knowledge, risk management, and flight proficiency standards an applicant must meet to qualify for a particular pilot certificate or rating. It defines the tasks examined on the practical test (checkride) and the performance standards used to evaluate the applicant.
Context Anchor
You will see Airman Certification Standards during flight training, checkride preparation, transition training, and any time an instructor or examiner discusses what performance is required.