Green’s Dictionary of Slang

twoosie(-woosie) n.

[? play on floozy n.]

an attractive young woman.

[UK]G. Fairlie Capt. Bulldog Drummond 105: Then he vanished into the black-out with the twoosie-woosie. [Ibid.] Yours faithfully leaps to his feet, seizes Mat, leaves the two twoosies goggling.