siu noun English. Elbow of one's arm. verb English. Bumps s.t. or s.o. with one's elbow. Example sentence: Subanen. Kali' ami pegbaskitbul, misiu ni Rudi baba'u, migdugu' gupia, laak nda' dau lengetay, pu' kana' tinibaba'. English. While we were playing basketball, Rudy hit me in the mouth with his elbow, but I didn't get mad, because he didn't mean to. Idiom: dibaluy siu noun English. A measurement of ca 1.2 m., from the tip of one's outstretched arm to the elbow of his other arm outstretch.