(in England, formerly) a man who wore or supported a leaf-covered wooden framework while dancing in May-Day celebrations
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
How to use jack-in-the-green in a sentence
If you cannot escape like a philosopher into a forest, at least you can carry the forest with you, like a jack-in-the-green.A Miscellany of Men | G. K. Chesterton
The only traces of the old custom of going a-Maying were the garlands of the milk-maids and the jack-in-the-green of the sweeps.
Miss Aynton's chef-d'oeuvre reminded him, it seems, of jack-in-the-green.Mirk Abbey, Volume 1(of 3) | James Payn
What a jolly old jack-in-the-green you must have looked like!Hide and Seek | Wilkie Collins
Why, you're covered with laurel, boy, like jack-in-the-green.Rose MacLeod | Alice Brown