gāo yao
herbal plaster applied to a wound
Lǐ Bǎi yào
Li Baiyao (565-648), Tang dynasty writer and historian, compiler of History of Qi of the Northern dynasties 北齊書|北齐书
shān yao dàn
(dialect) potato
rube
yokel
gǒu pí gāo yao
dogskin plaster, used in TCM for treating contusions, rheumatism etc
quack medicine
sham goods