ящик

Etymology
Borrowed from.

Noun

 * 1) box, chest

Etymology
or, from or. See for cognates.

In the sense of “secret facility”, from the Soviet Union-era rule of keeping the names of such facilities a secret by addressing mail to a post office box number without a name.

Noun

 * 1) box, case, chest
 * 2)  drawer
 * 3)  idiot box, boob tube (TV set)
 * 4)  secret facility, military facility
 * 5)  ; (email) inbox
 * 1)  ; (email) inbox

Etymology
From or.

Noun

 * 1) box, case, chest