apù phr.: apù to bu-ol; phr.: apù to talinga.. 1n Grandparent, grandmother or grandfather or their first cousins. 2n Term of address between grandparent and grandchildren (also brother or sister of grandparent): [In English, grandparents don't have a special term of address for a grandchild. They simply address the child by name.] 3n Step or adoptive grandchild; Pretend grandchild. 3.1v To call someone “grandparent” or “grandchild” 4n Grandparent and grandchild relationship; the two of them doing something together. 5v Regard someone as a grandparent or grandchild.