Ū; waiū (for various types, see Haw.-Eng. entry and entries that follow it); puʻuwaiū (female); poli, umauma; budding —, ʻōpuʻu; nursing —, poli ʻai. See idioms, poli, poli ʻawa, poli make. Hard core in a breast, haku waiū. First liquid before milk begins to flow, ʻōmaka waiū. A breast disease, heʻeheʻe. Breast stroke, ʻau umauma.