Pearl
Meaghann is a modern, stylized spelling of Megan, which is a Welsh diminutive of Margaret. The name ultimately derives from the Greek word 'margarites', referring to a pearl. This specific spelling variant adds extra letters to the traditional form, giving it a more elaborate appearance.
Less common today
Meaghann isn't in the latest US Top 1000. It last peaked at #7,264 in 1991.
US births per 5-year period, 1990βpresent (SSA data).