Современный толковый словарь русского языка Ефремовой
Очаг
..... 4.
устар. Наименование воспитательного учреждения для детей дошкольного возраста;
детский очаг, детский сад, ясли
Теперь о "кисках" - pussycat или просто: pussy.
Берем статью из Википедии:
Barrison Sisters
http://en.wikipedia.org/wiki/Barrison_Sisters
The Barrison Sisters, c. 1890s,
reveal kittens beneath their skirts.
The Barrison Sisters were a risqué Vaudeville act who performed in the United States and Europe from about 1891 to 1900,
advertised as The Wickedest Girls In the World.
In their
most famous act, the sisters would dance, raising their skirts slightly above their knees, and ask the audience,
"Would you like to see my pussy?" When they had coaxed the audience into an enthusiastic response, they would raise up their skirts, revealing that each sister was wearing underwear of their own manufacture that had a live kitten secured over the crotch.
Так что с 1900 года это слово за 50 лет вполне могло проникнуть и на территорию СССР:
второй фронт, ленд-лиз и пр. контакты с англоязычными собеседниками.