was getrunken

had anything to drink

→ etwas
phrase Rare #32,740
had anything to drink Here, “was” is a colloquial short form of “etwas” (something/anything).
GE: Hast du schon was getrunken?
EN: Have you had anything to drink yet?

Hast du heute Abend was getrunken?

Did you have anything to drink tonight?

Dabei hatte er nicht mal was getrunken.

And he hadn’t even had anything to drink.

— The Chaser (2008)

Und hatten Sie was getrunken?

And had you been drinking?

— State and Main (2000)

Haben Sie heute schon was getrunken?

Have you had anything to drink today?

— Oh Boy (2012)

Ihr habt wieder was getrunken?

Have you been drinking again?

— Pinocchio (2019)

Wir haben zusammen was getrunken, dann ist er mit Jo weggegangen.

We had a drink together, then he left with Jo.

— Lohn der Angst (1953)

Wir haben da was getrunken.

We had a drink there.

— Blau ist eine warme Farbe (2013)

Haben Sie was getrunken?

Have you been drinking?

— Wächter der Nacht (2004)