logwood Syllabification: (log·wood)Pronunciation: /ˈlôgˌwo͝od, ˈläg-/Definition of logwood noun a spiny Caribbean tree of the pea family, the dark heartwood of which yields hematoxylin and other dyes. Haematoxylon campechianum, family Leguminosae logwood in other Oxford dictionaries Definition of logwood in the British & World English dictionary