1Juice extracted from fruit, or a drink made primarily from fruit juice (e.g. orange juice, apple juice).
朝はいつもオレンジジュースを一杯飲む。
I always drink a glass of orange juice in the morning.
このジュースは果肉が入っていて濃厚だ。
This juice has pulp in it and tastes rich.
子どもたちにりんごジュースを配った。
I handed out apple juice to the children.
2More broadly, any soft drink or sweetened beverage — not limited to fruit juice — including carbonated or sweetened drinks (e.g. vending-machine sodas).
自販機でジュースを買って昼休みに飲んだ。
I bought a soft drink from the vending machine and drank it during lunch break.
パーティー用に炭酸ジュースをたくさん用意した。
I prepared a lot of soda for the party.
ジュースは飲みすぎると糖分の取りすぎになる。
Drinking too much soft drink means taking in too much sugar.