Picnic/ˈpɪknɪk/ Definition 1 of 3Pro Tip 1/3Outdoor Setting A picnic usually takes place in a natural or scenic outdoor area like parks or beaches. They spread a blanket under the tree for their picnic. Pro Tip 2/3Shared Experience It's a social event so consider it for family outings or gathering with friends. Our family reunion will include a big picnic. Pro Tip 3/3Casual Occasions Picnics are informal. They're perfect for relaxed and leisurely meals outdoors. Wear comfortable clothes for the picnic.