The name "Roger" is a masculine given name and surname derived from Old French and Germanic origins, meaning "fame" or "renown" combined with "spear" or "lance".
In radio communication, especially military and aviation contexts, "Roger" means "I have received and understood your message." It originated from the use of "Roger" as the phonetic alphabet term for the letter "R," which stood for "received." Saying "Roger that" confirms that a message has been heard and understood.
Additionally, historically, "Roger" also had slang meanings such as a term for "penis" from the 17th century to the 19th century and is sometimes used colloquially as a verb for sexual intercourse in modern British slang.
So, "Roger" can either be a name or a term used in communication to acknowledge receipt of a message. "Roger that" means "message received and understood."
