And the author of the poem called the Alcmæonis says—

He placed the corpses lowly on the shore
On a broad couch of leaves; and by their side
A dainty feast he spread, and brimming cups,
And garlands on their noble temples wreathed.

And the word ποτήριον comes from πόσις, drink, as the Attic word ἔκπωμα also does; but they form the word with ω, as they also say ὑδροπωτέω, to drink water, and οἰνοπωτέω, to drink wine. Aristophanes, in his Knights, says—

A stupid serpent drinking deep of blood (αἱματοπώτης).

But he also says in the same play—

Much then did Bacis use the cup (ποτήριον).

And Pherecrates, in his Tyranny, says—

One is better than a thousand cups (ποτήρια).

And Anacreon said—

I am become a wine-bibber (οἰνοπώτης).