widow twankey, n. — Green’s Dictionary of Slang

widow twankey n.

[rhy. sl.]

1. a handkerchief, i.e. a hankie.

1992		R. Puxley Cockney Rabbit.
2002		B. Kirkpatrick Wicked Cockney Rhy. Sl.

2. an American [= yankee].

1992		R. Puxley Cockney Rabbit.
2002		B. Kirkpatrick Wicked Cockney Rhy. Sl.
2010		IOL News (western Cape) 8 Apr. 🌐 Nicknamed after the Widow Twankey [...] and is also Cockney rhyming slang for an American (yankee).