What is another word for line of heart?
Pronunciation: [lˈa͡ɪn ɒv hˈɑːt] (IPA) 
The phrase "line of heart" is often used in palmistry to describe the line that runs horizontally across the upper part of the palm, between the base of the fingers and the base of the palm. However, there are many synonyms for this term that are less commonly used. These include the heart line, the love line, the emotion line, the affection line, and the relationship line. Each of these terms describes the same line on the palm, which is believed to provide insight into a person's emotional nature, including their capacity for love, compassion, and empathy.
