picnic
US /ˈpɪk.nɪk/
UK /ˈpɪk.nɪk/

1.
an occasion when a packed meal is eaten outdoors, especially as part of an excursion
:
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We're planning a picnic by the lake this weekend.
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The children enjoyed their picnic lunch in the park.
1.
eat a picnic
:
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We decided to picnic by the river.
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They often picnic in the botanical gardens.