Lewis & Short

sōlāris, e, adj. [sol], of or belonging to the sun, sun-, solar (not ante-Aug.): lumen, Ov. Tr. 5, 9, 37: arcus solares lunaresque sunt, Sen. Q. N. 1, 10 fin.: circulus, Plin. 2, 23, 21, § 86: pars piceae, sunny, towards the sun, id. 16, 12, 23, § 57: herba, i.e. a plant, called also heliotropium, Cels. 5, 27, 5.