soda pop; fizzy soft drink; lemonade
In Japanese, サイダー refers to a sweet, clear, carbonated soft drink, often fruit-flavored (especially lemon-lime). It is not alcoholic cider.
from English cider
暑い日には冷たいサイダーが飲みたい。
On a hot day, I want to drink a cold soda.
このサイダーはレモン味でさっぱりしている。
This soda is lemon-flavored and refreshing.
apple cider (non-alcoholic); sweet cider; soft cider
Borrowed from English 'cider', but the meaning shifted to refer to a sweet, non-alcoholic carbonated drink in Japanese.