cousins

1. (espionage, slang) The American intelligence services (from a British perspective) or the British intelligence services (from an American perspective).Examples: "[T]he grounded fieldmen, the trainers and the case officers who made their own murmured caucus always – they saw the question solely in operational terms. […] They saw the shotgun marriage with the Cousins as just another skilful bit of tradecraft in a long and delicate poker game."pluralplural-onlyslang