What does ke mean in Hawaiian?
Ke is the form of the definite article used before words beginning with k, e, a, or o, a rule remembered as the ke-a-o rule. Kekoa is the warrior, Keola the life, Keanu the coolness, Keoni is John. Everywhere else the article is ka.
Say it KEH. Every vowel is pronounced, and the capitalized syllable takes the stress. The pronunciation guide covers the rules.