%agnus castus%

‖ [ Gr. &unr_; a willowlike tree, used at a religious festival; confused with &unr_; holy, chaste. ] (Bot.) A species of Vitex (Vitex agnus castus); the chaste tree. Loudon. [ 1913 Webster ]

And wreaths of agnus castus others bore. Dryden. [ 1913 Webster ]