Definition of Japanese oak
: any of several oaks that are native to, grown in, or shipped as timber from Japan: such as a : an evergreen oak (Lithocarpus glabra) closely related to and resembling the tanbark oak of the American Pacific coast b : any of several oaks of the genus Quercus (especially Q. grosseserrata) with moderately light, fine-grained, even-textured wood
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