A lineament is a fancy, literary word that means "a part of a person's face," like his eyes, ears, or nose.

In his poem "Manfred", Lord Byron wrote, "She was like me in lineaments — her eyes / Her hair, her features, all..." He was basically saying that a particular woman's face looked a lot like his own face, when he examined each part of it — each lineament — separately. The word comes from the Latin word linea, meaning "line." Lineaments can also refer to someone's distinctive features, not just their looks.

Definitions of lineament

n the characteristic parts of a person's face: eyes and nose and mouth and chin

“his lineaments were very regular”
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chin, mentum
the protruding part of the lower jaw
brow, forehead
the part of the face above the eyes
the flat area on either side of the forehead
either side of the face below the eyes
a fullness and looseness of the flesh of the lower cheek and jaw (characteristic of aging)
the bones of the skull that frame the mouth and serve to open it; the bones that hold the teeth
buccula, double chin
a fold of fatty tissue under the chin
Type of:
body part
any part of an organism such as an organ or extremity

n a characteristic property that defines the apparent individual nature of something

character, quality
the essential quality of something
Type of:
attribute, dimension, property
a construct whereby objects or individuals can be distinguished