What is the meaning of Fasto?

fast (period of abstinence from food)

fasting

pomp, splendor, magnificence, richness

dative/ablative singular of fāstus

firmly

Braune, Wilhelm. Althochdeutsches Lesebuch, zusammengestellt und mit Glossar versehen

allowed (not forbidden)

in accordance with the will of God

of a Roman religious holiday

pageantry, pomp

Source: wiktionary.org