lactiferous
adjective
lac·tif·er·ous lak-ˈti-f(ə-)rəs 
1
: yielding a milky juice
lactiferous plants
2
: secreting or conveying milk
Word History
Etymology
French or Late Latin; French lactifère, from Late Latin lactifer, from Latin lact-, lac + -fer
First Known Use
circa 1674, in the meaning defined at sense 1
Medical Definition
lactiferous
adjective
lac·tif·er·ous lak-ˈtif-(ə-)rəs
: secreting or conveying milk