Plain English Meaning
The exact things you must do and have written down in your logbook before you can take a checkride or get an endorsement. If a rule says you have to do it, it counts as a required task.
Full Definition
The specific maneuvers, procedures, and items of knowledge that a regulation, training syllabus, or practical test standard mandates a pilot complete and have logged before being eligible for a certificate, rating, endorsement, or check.
Context Anchor
Seen in training records, instructor notes, lesson plans, and discussions about logging what training has been completed.