What does one mean in Hawaiian?
One is sand, and a beach is kahaone. Sand is the one in Kaʻonehānau, the birth sands, a phrase for one's homeland. Kaone is the sand, Onelani heavenly sand, Leione a lei of sand. It is pronounced OH-neh, not like the English number.
Say it OH-neh. Every vowel is pronounced, and the capitalized syllable takes the stress. The pronunciation guide covers the rules.
On this site one is part of 1 names: 0 begin with it, 1 end with it. Most are boy names, and all of them sit in the group of Hawaiian names meaning earth.