This is the 3442nd most frequent German word.
kater
"Kater" in English means "hangover" (from alcohol) or "male cat."
In this sentence, 'Kater' is used metaphorically to describe the aftermath of excessive drinking, i.e., a hangover.
Ich habe einen Kater, weil ich gestern zu viel gefeiert habe.
I have a hangover because I partied too much yesterday.
Here, 'Kater' refers to a male domestic cat, highlighting its literal meaning.
Mein Kater schläft gerade auf dem Sofa.
My tomcat is currently sleeping on the sofa.
The word 'Kater' in this context denotes a male cat and shows its usage in literary or storytelling scenarios.