落らく葉よう高こう木ぼくらくようこうぼくMeanings1noundeciduous tall treeBotanical term referring to a tall tree that sheds its leaves annually. Contrasts with 落葉喬木 (らくようきょうぼく), which is a synonym.See also: 落葉喬木この森もりには落らく葉よう高こう木ぼくが多おおく、秋