- 06.082 Other birds flew to the tree-tops
- 19.011 The wind’s in the tree-top, the wind’s in the heather;
Hyphenated or two words will do for OED.
“ˈtree-top | tree top, n.” OED Online, Oxford University Press, June 2017, http://www.oed.com/view/Entry/205437. Accessed 21 September 2017.