出臍[debeso] protruding navel
膃肭臍[ottosei] fur seal (esp. the northern fur seal, Callorhinus ursinus)
お臍[oheso] navel
臍のゴマ[hesonogoma] belly-button lint
臍の緒[hesonoo] umbilical cord

臍下[seika] lower abdomen
臍下丹田[seikatanden] pit of the stomach
臍曲り[hesomagari] perverseness
臍繰り[hesokuri] secret savings
臍繰り金[hesokurigane] secret savings