hen

be as scarce as hen's teeth (American & Australian)

to be very difficult or impossible to find. It was the President's inauguration and hotel rooms in Washington were as scarce as hen's teeth.

See also: scarce, teeth

a hen night/party (British & Australian)

a party for women only, especially one that is organized for a woman who is soon going to get married. Barbara's having her hen night a week before the wedding.

See also: night, party