Slender, fair, or small hollow
Keilin is a modern phonetic variant likely derived from the Irish name Caelan or the Scottish Gaelic Cailean. It carries the traditional meanings of 'slender' or 'fair', while some interpretations link it to the English word for a 'small hollow' or 'nook'.
Less common today
Keilin isn't in the latest US Top 1000. It last peaked at #7,475 in 2022.
US births per 5-year period, 1990βpresent (SSA data).