garden party

a party given out of doors in a garden or yard.

Origin of garden party

First recorded in 1865–70

But I met you last summer at the Anstells' garden-party, and you passed me an ice, vanilla and strawberry mixed!

The Professional Aunt |Mary C.E. Wemyss
Some little perplexity is felt by the recipients of evening garden-party invitations as to the style of dress that should be worn.

Manners and Rules of Good Society |Anonymous
This was evidenced by what was ever after spoken of by us girls as the garden-party episode.

Fifty-Two Stories For Girls |Various
I think you shall come with me to the Amberleys' garden-party this afternoon, and not Ella, as we are dining out this evening.

The Talking Horse |F. Anstey

He was well aware that Lady Mab would be at the garden-party.

The Duke's Children |Anthony Trollope

garden party

a social gathering held in the grounds of a house, school, etc, usually with light refreshments