A babushka is a type of headscarf worn by women in Russian and other Eastern European cultures. Tatya Bilash had the Vulcan T'Lera wear one of her babushkas when transferring from the Agro III station to the CSS Delphinus in order to hide her alien-looking ears. (TOS novel: Strangers from the Sky) Lieutenant Commander Kieran Duffy once mistakenly used the word babushka for a bathrobe, leading Captain David Gold to advise, "Leave the Yiddish to the experts." (SCE eBook: Foundations, Book One)