also cham·pac C0234400 (chăm′păk, chŭm′pŭk) or cham·pa·ca(chăm′pə-kə, chŭm′-)n. An evergreen timber tree (Michelia champaca) native to India and having fragrant orange-yellow flowers that yield an oil used in perfumery.[Hindi campak, from Sanskrit campakaḥ, of Dravidian origin; akin to Tamil caṇpakam.]