<p><strong>Noun</strong></p><ul><li>A shrubby chestnut, <em>Castanea pumila</em>, of the beech family, native to the southeastern United States, having toothed, oblong leaves and small edible nuts. Also called golden chinquapin.</li><li>A Pacific coast evergreen tree, <em>Castanopsis chrysophylla</em>, of the beech family, having deeply furrowed bark, dark green lance-shaped leaves, and inedible nuts.</li><li>The nut of either of these trees.</li></ul>