Quick answer
Kyle is a boy name meaning "narrows, channel, strait".
Meaning and history
From a Scottish surname that was derived from various place names, themselves from Gaelic caol meaning "narrows, channel, strait". As a given name it was rare in the first half of the 20th century. It rose steadily in popularity throughout the English-speaking world, entering the top 50 in most places by the 1990s. It has since declined in all regions.
Notes and context
Usage: english