To make someone feel admiration and respect. The young musician managed to impress the judges with her performance.
To produce a vivid image or memory in someone's mind. The beauty of the landscape impressed itself upon her memory.
To apply pressure to something to leave a mark or design. He used a seal to impress the wax on the envelope.
To compel (a person) to serve in the armed forces, especially by force. In the 18th century, the navy would impress sailors from colonial ports.
To emphasize the importance of something to someone, especially using the construction "impress on/upon". Teachers must constantly impress upon students the need to think critically.