1 agnus castus | Definition of agnus castus

agnus castus

noun
ag·​nus cas·​tus | \ ¦ag-nəs-ˈka-stəs\
plural agnus castuses

Definition of agnus castus

2 : an extract of the fruit of the chaste tree used in herbal medicine : chaste tree sense 2 In one trial, 48 women (aged between 23 and 29) diagnosed with infertility took agnus castus once daily for three months.— Marilyn Glenville, Boost Your Fertility, 2009

First Known Use of agnus castus

14th century, in the meaning defined above

History and Etymology for agnus castus

Middle English, borrowed from Medieval Latin, literally “chaste agnus” (by association of the plant name with Greek hagnós “pure, chaste”), going back to Latin agnos, agnus, borrowed from Greek ágnos

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