Rye hill or island meadow
Rhylin is a modern American coinage likely derived from the Welsh name Rylan or the English surname Ryland. It combines the elements 'rye' (the grain) and 'land' or 'lyn' (lake/pool), often interpreted as a peaceful meadow or hillside.
Less common today
Rhylin isn't in the latest US Top 1000. It last peaked at #5,891 in 2012.
US births per 5-year period, 1990βpresent (SSA data).