Esher

(noun) One of those push taps installed in public washrooms enabling the user to wash their trousers without actually getting into the basin. The most powerful esher of recent years was 'damped down' by Red Adair after an incredible sixty-eight days' fight in Manchester's Picadilly Station.

See Botley, Esher, Piddletrenthide, Wimbledon.

source : The Meaning of Liff