Also called: Hour-glass thumb · Violin-waisted second phalange · The diplomat's thumb

Where on the hand: On the second (logic) phalange of the thumb, seen in front view.

What it looks like: The middle of the second phalange is delicately narrowed, so the section has the outline of an hour-glass or the waist of a violin, flaring again at both ends.

Cheiro: *"indicates tact, diplomacy, and gentleness, also subtlety in argument."* This is the classic diplomat's thumb — the person who wins the point without appearing to press it.

Western reading: Cheiro treats the waisted-versus-straight contrast as the single most useful thumb distinction.

indicates tact, diplomacy, and gentleness, also subtlety in argument.Cheiro, Palmistry for All (1916)