βοῦστον

From LSJ

ἔργοισι χρηστός, οὐ λόγοις ἔφυν μόνον → a friend in deeds, and not in words alone

Source

Spanish (DGE)

-ου, τό
lat. bustum n. dado a los restos de una pira funeraria, Procop.Goth.4.29.5.