Bitter or beloved pearl
A modern compound name likely blending May and the suffix -line. May derives from the month or the hawthorn flower, while the suffix often links to names like Madeline or Caroline, suggesting roots in Mary (bitter/beloved) or Margaret (pearl).
Less common today
Mayline isn't in the latest US Top 1000. It last peaked at #3,553 in 2004.
US births per 5-year period, 1990βpresent (SSA data).