Here are some possible English translations based on context:
* Lentil fritters: This is the most common and straightforward translation.
* Crispy lentil snacks: This emphasizes the texture and flavor of the snack.
* Olaichuvadi (Tamil name): This option is used when you want to be specific and refer to the dish by its original name.
Ultimately, the best way to describe "olaichuvadi" in English depends on the specific context and your audience.