From Longman Dictionary of Contemporary Englishgandergan‧der /ˈɡændə $ -ər/ noun [countable] 1 HBBa male goose12 → have/take a gander at something
Examples from the Corpus
gander• All I did in that bloody room was take a gander while Annie was answering the phone.• Sauce for the goose but not, apparently the gander!• What has been sauce for the goose has not been sauce for the gander.• What's sauce for the goose is sauce for the gander.Origin gander Old English gandra 