Could you please provide more context or a sentence where you encountered this word? This would help me understand what you are looking for and provide a more accurate response.
For example:
* What is the meaning of "pena" in Malayalam?
* What is the Malayalam word for "pena"?
* Can you translate this sentence from English to Malayalam: "I have a pena."
Once I have more context, I can help you with the meaning of "pena" in Malayalam.