hen partynoun [ C ]
uk/ˈhen ˌpɑː.ti//ˈhen ˌpɑːr.t̬i/UKalso hen night, /ˈhen ˌnaɪt//ˈhen ˌnaɪt/, also informal hen do, /ˈhen ˌduː//ˈhen ˌduː/, US bachlorette party a party for a woman who is going to get married soon, to which only her female friends are invited:
Are you going to Michelle's hen party?
a group of women at a party for a woman who is going to get married soon:
And then the hen party arrived and invaded the dance floor.
Compare
stag party