Of Scottish origin but now widely used in the English-speaking world. It is derived from a topographic term denoting a narrow strait or channel and in part is a transferred use of the surname, a local name from the region in Ayrshire so called. As a girl's name it appears to have been largely superseded by Kyla.
Scottish: habitational name from a place near Ecclefechan in Dumfries, locally pronounced ‘kridders’. The name is first recorded in 1334 in the form Carrothres, and then more clearly in c.1350 as Caer Ruther, and derives from British caer ‘fort’ + a personal name.