winged spindle tree: bushy deciduous shrub with branches having thin wide corky longitudinal wings; brilliant red in autumn; northeastern Asia to central China
spindle tree: any shrubby trees or woody vines of the genus Euonymus having showy usually reddish berries
mean sun: a theoretical sun that moves along the celestial equator at a constant speed and completes its annual course in the same amount of time the real sun takes at variable speeds