noun
picnic
B1
Picknick (das) means picnic, an outdoor meal. Plural: Picknicks. Declension: nom./acc. das Picknick/die Picknicks; gen. des Picknicks/der Picknicks; dat. dem Picknick/den Picknicks. Loanword from English; used with verbs like 'ein Picknick machen' (to have a picnic). Neuter, regular, common usage.
Examples
Die Gruppe machte ein Picknick im Park, obwohl der Wetterbericht Regen vorhersagte.
The group had a picnic in the park although the weather forecast predicted rain.
Bei schönem Wetter machen wir ein Picknick im Park.
If the weather is nice, we'll have a picnic in the park.
Wir machen morgen ein Picknick im Park.
We're having a picnic in the park tomorrow.
Details
Mnemonics
Visualize a checked blanket, a basket, and people 'picking' a nice spot in the 'nick' of a sunny park.
Sounds like English 'pick nick' — imagine picking a spot for lunch.
das Picknick — think 'das' = neutral like 'the thing/event' rather than a person.
Notes
Commonly used for informal outdoor meals. Plural often formed with -s (Picknicks).