a public youth party in the open / an outside party for young people

Aš palikčiau 'gegužinę' ir paaiškinčiau, ką tai reiškia, kaip ir žemiau pateiktuose pavyzdžiuose.

In prewar Lithuania, this custom gave birth to a very popular innovation called gegužinė, large outside parties for young people with music, dancing and singing. The first gegužinė was often held on Whitsunday

Girls were not allowed to go to the parties held outside the boundaries of their native village. In the interwar period such chances were significantly widened by gegužinės, an innovation of the end of the 19th century. Gegužinė means a public youth party in the open.