A chuppah (Hebrew: חוּפָּה, pl. חוּפּוֹת, chuppot, literally, "canopy" or "covering"), also huppah, chupah, or chuppa, is a canopy under which a Jewish couple stand during their wedding ceremony. It consists of a cloth or sheet, sometimes a tallit, stretched or supported over four poles, or sometimes manually held up by attendants to the ceremony. A chuppah symbolizes the home that the couple will build together. While a Jewish marriage is still considered valid in the absence of a chuppah, a chuppah is still considered a basic requirement for a Jewish wedding.
In a more general sense, chupah refers to the method by which nesuin, the second stage of a Jewish marriage, is accomplished. According to some opinions, it is accomplished by the couple standing under the canopy; however, there are other views.
Read more about Chuppah: Customs, History and Legal Aspects, Symbolism, Modern Trends