This is the 8822nd most frequent German word.
küas
It seems "küas" is not a standard German word. Could you mean something else, like "kühl" (cool) or "Kuß" (kiss in its old spelling)?
The word "küas" might confusedly connect to the verb "kühlen" (to cool).
Ich kühle das Getränk im Kühlschrank ab.
I am cooling the drink in the fridge.
"küas" is confusing here but might phonetically resemble "Küste" (coast).
Die Küste ist nah, lass uns schwimmen gehen.
The coast is nearby; let's go swimming.
Here, "küas" (misheard or unclear reference) could be a misunderstanding or miswriting for "Kühlschrank" (refrigerator).