Slender or keeper of the keys
Kail is a name with multiple potential roots, most commonly seen as a variant of the Gaelic name Cael, meaning slender. It is also sometimes associated with the Germanic name Kai, which can mean keeper of the keys or sea. In modern usage, it often functions as a phonetic variation of Cale or Kyle.
Fewer than 5 boys were named Kail in 2025.
US births per 5-year period, 1990–present (SSA data).
Professional American football player
