ipil . ( Voice tagala ). 1. m., legume, tree of the Philippines, leaves opposite and winged, leaflets ovate and hairless, flowers in panicle, tubular calyx with ten stamens, corolla of a single petal, and leathery pod, in the form of sickle, two-valved and three or four seeds. Wood, hard, heavy, and yellow color that darkens with age as the European walnut, is incorruptible and highly appreciated for the construction of furniture and other objects.