The spelling of the word "rafta" can be a bit confusing, but it's actually pretty straightforward when you break it down. The correct spelling is "rafter," which is pronounced /ˈræftər/ (RAF-tər) in IPA phonetic transcription. It refers to a structural piece of wood or metal that supports the roof of a building. So next time you see a roof being built, you'll know exactly what that long, horizontal piece of wood is called!