Here are some possibilities:
* Filipino: "Pulo" means island.
* Indonesian/Malay: "Pulo" is a more informal word for island, often used in place of "pulau".
* Other languages: It could also be a word from another language. Please provide more context, such as the sentence it's in or the language it is from.
Could you please tell me more about where you encountered the word "pulo" so I can give you a more accurate translation?