An "impression" is the effect or influence that something or someone has on our thoughts and feelings. For example, when you meet a new person, your first impression can shape how you feel about them. This can be based on their appearance, body language, or the way they speak. In art, an impression can refer to a style that captures a moment in time, like the works of Claude Monet. His paintings often focus on light and color, creating a feeling rather than a detailed representation. This approach allows viewers to experience the beauty of a scene in a unique way.