limbu'uk noun English. A airplant which grows up in trees and has narrow, long leaves which appear like hair hanging down. Example sentence: Subanen. Limbu'uk, ginis sigbet mentubu' dig ditaas gayu, baalen nami sempadan, muka' bulung buuk. English. limbu'uk is a variety of plant that grows in treetops; we use it as an ornamental plant, and as medicine to make one's hair grow thick. Generic. sigbet adjective English. Characteristic of trees having needles or needle-like leaves.