- a libation
STEPBible TBESG
1. a drink-offering , i. e. the wine poured out to the gods before drinking, Lat. libatio, (Hesiod); σπονδὰς θεοῖς λείβειν, σπένδειν (Aeschulus Tragicus)
2. in plural, σπονδαί was a solemn treaty or truce , (because solemn drink-offerings were made on concluding them); σπονδαὶ ἄκρητοι the truce made by pouring unmixed wine, (Iliad by Homer); αἱ Λακεδαιμονίων σπ. the truce with them. (Thucydides); σπονδὰς παραδιδόναι (Aristophanes Comicus); δέχεσθαι (Thucydides); τυχεῖν (Xenophon Historicus); σπ. ποιεῖσθαί τινι to make a truce with one, (Herdotus Historicus); πρός τινα (Aristophanes Comicus); σπ. τέμνειν (like ὅρκια τέμνειν); (Euripides); σπ. ἄγειν πρός τινας (Thucydides)
3. αἱ Ὀλυμπικαὶ σπ. the solemn truce or armistice during the Olympic games, (Thucydides)
4. the treaty itself , εἴρηται ἐν ταῖς σπ. (Thucydides) (ML)