Here are some options for how you could refer to kale in Tamil:
* கேல் (Kāl): This is the most common way to say "kale" in Tamil, as it is the direct transliteration of the English word.
* கேல் கீரை (Kāl kīrai): This means "kale greens" in Tamil and adds the word for greens (kīrai) for a more specific description.
* சீமை கீரை (Sīmai kīrai): This translates to "foreign greens" and could be used for kale, although it's a general term for many non-native leafy greens.
Ultimately, the best option depends on the context and your audience.