Pearl
Meghin is a modern spelling variant of Megan, which is a Welsh diminutive of Margaret. The name ultimately derives from the Greek word 'margarites', referring to a pearl. While the 'Meghin' spelling is rare, it retains the classic etymological roots of its more common counterparts.
Less common today
Meghin isn't in the latest US Top 1000. It last peaked at #2,798 in 1990.
US births per 5-year period, 1990βpresent (SSA data).