Nervo and Knox
noun
1
television; a television. Rhyming slang for BOX, formed from the names of a comedy double act, members of the Crazy Gang, Jimmy Nervo, 1890–1975, and Teddy Knox, 1896–1974 UK, 1971.
2
syphillis, a sexually transmitted infection. Rhyming slang for POX, sometimes abbreviated to 'nervo' UK, 1977.
3
socks. Rhyming slang UK, 1961