This is the 7859th most frequent Russian word.
камчатка
"Kamchatka" refers to the Kamchatka Peninsula in Russia or, colloquially, the back row in a classroom.
In this sentence, 'Камчатка' refers to the Kamchatka Peninsula, a geographical location in Russia.
Я всегда мечтал побывать на Камчатке.
I have always dreamed of visiting Kamchatka.
Here, 'Камчатка' represents the region as a place of origin for the person.
У нас новая учительница, она из Камчатки.
We have a new teacher, she is from Kamchatka.
In this context, 'камчатка' is a colloquial term referring to the back of the classroom, used informally in Russian.