rooibos UK /ˈɹɔɪ.bɒs/US /ˈɹɔɪˌbɔs/ noun3 •A shrub (Aspalathus linearis) from which a tisane (herbal tea) is made.The air is aromatic with buchu (Rutaceae), pines, rooibos (Aspalathus linearis), and, of course, the cedars for which these mountains are named. — 1980 •The tisane (herbal tea) made from this plant.During the past twenty years or so farmers in the Cedarberg region, from Citrusdal to Nieuwoudtville, have raised the rooibos tea industry from obscurity to minor boom. — 1967 •(South-Africa) Various shrubs of the genus Combretum.Bush Willow (Rooibos) (Combretum apiculatum). Rooibos occurs in most parts of the ranching areas of the northern, north-western and north-eastern Transvaal. — 1942