Camp out Definition 1 of 2Pro Tip 1/3Outdoor Activity Refers to setting up a temporary living space outside, often for leisure. We're going to camp out by the lake this weekend. Pro Tip 2/3Informal Setting Mostly used in casual conversations and informal writing about personal plans or experiences. They love to camp out during summer breaks. Pro Tip 3/3Nature Experience Implies an experience close to nature and usually away from urban areas. When you camp out in the mountains, you'll hear no city noises.