Fenestellas, the Latin word for little windows, can also be referred to as "portholes" or "apertures." These synonyms are often used in nautical or architectural contexts. In biology, "fenestrae" or "fenestrations" are terms used to describe small openings or gaps, particularly in the walls of blood vessels or bones. In medicine, "fenestration" can also refer to a surgical procedure where a small opening is made in an organ or tissue. The word "fenestrate" can be used as a verb to describe the process of creating windows or openings. Overall, these synonyms can be used interchangeably to refer to small openings or windows.