- plural noun rhyming slang for flares, i.e. bell-bottom trousers. This phrase was an ephemeral youth term of the late 1970s used contemptuously of the (by then) unfashionable style and the remnants of the hippy movement who still favoured it. London’s Grosvenor square, the site of the US embassy, was the scene of peace demonstrations by students and hippies during the Vietnam war. A later, more lasting, alternative piece of rhyming slang for the same item was Lionel Blairs, followed by Tony Blairs.