■ noun
1》 an additional rail supplying electric current, used in some electric railway systems.
2》 US informal a subject considered by politicians to be too controversial to discuss.
■ noun
1》 an additional rail supplying electric current, used in some electric railway systems.
2》 US informal a subject considered by politicians to be too controversial to discuss.
Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004