usuk 1 noun English. Rib of any invertebrate; similar objects, as the rib of an umbrella. Example sentence: Subanen. Kali' melabu' buat dig ditaas niug, bena' mitena' tug lupa'an, milimbagi giliden dig batu, dua' laadi gusuken mibali'. English. When he fell from the top of a coconut palm and landed on his side on a rock, he broke two ribs. Generic. bekeg; tulan