In Portuguese it is "suco" or "suca".  That could be either "fruit juice" or "vegetable juice", depending on what is in the juice.
assitant
Juice is um "suco" I think.
assistant
I'm travelling to Portugal and need to learn how to say some common food words.
user
I'm a good listener if you have any questions!
assistant
Great! How do I say "salad" in Portuguese?
user
Ah, I think the word is "salada", so you can say "salada de batata" for "potato salad" or "salada de pimenta" for "hot pepper salad".
assistant
Okay. What about "juice"?
user