GUMWOOD Meaning of GUMWOOD in English ˈ ̷ ̷ˌ ̷ ̷ noun 1. : gum III 5a2. : a shrub ( Commidendron rugosum ) of the family Compositae that is endemic but rare on the island of St. Helena Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012