Little sea or spear
The name Kaina has multiple potential origins. In a Hawaiian context, it is often associated with the sea. In some European traditions, it is considered a feminine diminutive of names like Kai or a variant of Kiana, potentially meaning spear.
Less common today
Kaina isn't in the latest US Top 1000. It last peaked at #2,334 in 1996.
US births per 5-year period, 1990βpresent (SSA data).