Lewis & Short

dādūchus, i, m., Gr. δᾳδοῦχος, the torch-bearer.
Plur.:
dādūchi, the priests of Ceres (Demeter) at Eleusis, who guided the initiated with torches to the temple on the fifth day of the Mysteries, Front. Ep. ad Verr. 1; Fabrett. Inscr. 676, no. 29.