Plain English Meaning
Getting an idea from your head into someone else's head so that they end up understanding it the same way you do. If they walk away with a different picture than you meant, communication wasn't effective — even if you spoke clearly.
Full Definition
In instructional use, the successful transfer of information, ideas, or skills from one person to another such that the receiver understands the message in the way the sender intended. It requires a shared frame of reference between sender and receiver, accurate symbols (words, gestures, demonstrations) to carry the message, and feedback confirming the message was received as intended.
Context Anchor
Used in flight instruction, cockpit briefings, radio calls, and any where a , instructor, or needs another person to understand a message accurately.