Chilling; the state of being chilled or a prefix indicating something served cold (e.g., 'hiyashi-chuka').
暑い日は冷やし中華がよく売れる。
Cold Chinese-style noodles sell well on hot days.
飲み物は冷やしでお願いします。
Please make the drinks cold.
夏限定の冷やしトマトが人気だ。
Chilled tomatoes (summer-only) are popular.