I am eating a cookie.

Biscuits as a UK English translation should be acceptable

Why is it not "εγώ τρώω τα μπισκότο."? I get that the translation would be "I eat cookies" vs mine which is "I eat the cookies" but I was under the impression that nouns usually have their articles even when they wouldn't in English.

Wow, I never imagined that the Hungarian word "piskóta" (which is a special sort of cake rather than cookies) may have Greek relations. Now I'm really curious.