A picnic to me is an event I plan for. I make sandwiches, fried chicken, salads, deviled eggs, assorted cold drinks and desserts. On occasion I do have a spur of the moment store/restaurant picnic. I glad you asked this question, its been a while since I have had a picnic. I will put it on my to do list for my grandchildren.
It's a group of people having meal together in a park , the forest, a garden or on the beach. They bring foods and some drinking like beers etc... And have fun together.
A casual meal carried to an outdoor setting.
Typically, a meal of sandwiches, chips, fruit, drinks prepared and placed in a basket to eat together in an outdoor setting, a park, or lake or simply outside on your lawn.