Green’s Dictionary of Slang

1. (N.Z./US) a petting session.

1938		Reading (PA) Eagle 20 Mar. 7/3: When a student calls up the girl friend for a date [...] it’s ’would you like to pitch-a-little-woo’ .
1940		R.L. Bellem ‘Death’s Passport’ in Goodstone Pulps (1970) 116/1: I knew [...] you wouldn’t be in any mood to pitch woo with a murder on your conscience!
1942		Hartlepool Mail 14 Aug. 2/3: The R.A.F. has developed a language all its own. [...] Some expressions have been borrowed from the United States, including ‘Flinging a woo,’ which means to have a date with a girl.
1943		R.L. Bellem ‘Dead Man’s Shakedown’ in Dan Turner Detective Mar. 🌐 I decided to kill time by going downstairs to the theater proper and watching a ghost fling woo.
1944		J. Archibald ‘It Could Only Happen to Willie’ in Popular Detective Apr. 🌐 The proprietor [...] told them both that if they wanted to put on the woo, they could go over to a park somewhere.
1959		G. Slatter Gun in My Hand 208: She’s been having a woo with some joker all right. Out in one of the cars.
1988		McGill Dict. of Kiwi Sl. 124/1: woo a kiss and cuddle and maybe more, without necessarily intending to woo or pay court to and seek everlasting love.
2003		McGill Reed Dict. of N.Z. Sl. [as cit. 1988].

2. attrib. use of sense 1.

1948

J. Archibald ‘Photo Finish for a Dame’ in Popular Detective Mar. 🌐 She threatens t’ contact the Missus an’ flash the woo snapshot.