To Chill Something
To Cool Something
transitive verb, godan verb
冷たい is "cold." This is the verb version, so you're making something cold. This word is to chill something or to cool something.
To chill something, you need to apply cold, not heat (ひ).
ジュースを冷やすのを忘れたので、氷を入れますね。
I forgot to chill the juice, so I'll add ice.
ビールを冷やしてあるからそれを飲んだら？
The beer is chilled, so why don't you have some of that?
自分が何をしたのか頭を冷やしてよく考えなさい。
Cool your head and think well about what you have done.
指をドアで挟んじゃって、今氷で冷やしてるの。
My finger got caught in the door and I'm chilling it with ice now.