What is the meaning of Koppa?

The 18th Ancient Greek letter in early versions of the Greek alphabet, Ϙ (lowercase ϙ).

The Greek numeral Ϟ (lowercase ϟ), descended from the ancient letter and having the numerical value of 90.

The archaic Cyrillic numeral Ҁ (lowercase ҁ), descended from the ancient Greek letter and having the numerical value of 90.

Koppa; the Ancient Greek letter Ϙ (lowercase ϙ)

koppa (letter of the Greek alphabet)

basket

case, enclosure

case, crate (of a bottled drink)

koppa (former letter of the Greek alphabet)

Alternative spelling of coppa

A Greek letter, corresponding to Latin q

a pock (pus-filled swelling)

to cup

Source: wiktionary.org