This is the 6214th most frequent Japanese word.
キンキン
"キンキン" refers to something sharp, high-pitched, or piercing, often describing sounds or sensations.
The onomatopeia "キンキン" indicates the extreme cold temperature of the beverages in this context.
冷たい飲み物がキンキンに冷えています。
The cold beverages are ice-cold.
"キンキン" here is used to describe a sharp or high-pitched sound.
彼はキンキンと高い声で叫びました。
He shouted in a piercingly high-pitched voice.
"キンキン" in this sentence conveys a sharp, persistent sensation, typically related to discomfort or pain.