Also called: Mastak Rekha (मस्तक रेखा) · Shiro rekha (శిరో రేఖ) · Buddhi rekha (బుద్ధి రేఖ) · Line of Head · Line of Mentality · Natural Mean · Liver line (archaic, Dale)

Where on the hand: Starts on the radial edge in or near the same web as the Life line, between thumb and index — either touching or joined to the Life line, springing from inside it, or clearly separate — then runs transversely across the middle of the palm below the Heart line, forming the upper boundary of the Great Triangle, and ends anywhere from below Saturn (short) to the percussion below Mercury (long), or descends onto the Mount of Luna.

What it looks like: The middle of the three transverse creases: a single clean line crossing the palm, either running straight and level or sloping downward toward the Luna mount, often forked at its far end.

Intellect, mental style, concentration, memory, reasoning power, self-control, decision-making, and the quality — not the quantity — of the mind. Indian sources add vidya (learning capacity), smriti (memory) and vivek (discrimination), and use it as the primary indicator of head, brain and nervous health. Beware older nomenclature: some archaic texts, including Dale, call the transverse mid-palm line the "Liver line".

Western reading: Cheiro's three origin classes and his position-specific island list are the backbone of the Western reading; the degree of slope toward Luna is treated as the whole reading of imagination. Dale's 1895 text preserves an older Indo-Persian angle-and-triangle doctrine that differs from both schools.

Read with care: The line carries several frightening or moralising claims — head injury and mental crisis at a break under Saturn, delusion and morbid depression from a steep Luna slope, eye weakness, anaemia, "evil disposition" and "theft, deceitfulness" in Dale's archaic angle readings, and sex-specific childbirth predictions. Present all of these as tradition, not fact; Dale's gendered readings in particular are archaic.

over-sensitive, over-cautious, timid personCheiro, Palmistry for All (1916)

increasing desire for wealth strengthening with ageCheiro, Palmistry for All (1916)

starving cerebral functionCheiro, Palmistry for All (1916)