Wiktionary
heart line
n. (context palmistry English) A line on the palm of the hand from below the index finger to below the pinky, supposed to indicate, by its form or position, one's love life.
WordNet
heart line
n. a crease on the palm; palmists say it indicates your emotional nature [syn: line of heart, love line, mensal line]
Usage examples of "heart line".
His hot tongue trailed her heart line sending smoldering fire straight to her soul.