Often, lineaments.a feature or detail of a face, body, or figure, considered with respect to its outline or contour: His fine lineaments made him the very image of his father.
2.
Usually, lineaments.distinguishing features; distinctive characteristics: the lineaments of sincere repentance.
3.
Geology. a linear topographic feature of regional extent that is believed to reflect underlying crustal structure.
Origin: 1400–50; late Middle English < Latin līneāmentum a stroke, plural, features, equivalent to līneā(re) to draw a line (derivative of līnea;see line1) + -mentum-ment
early 15c., "distinctive feature of the body, outline," from M.Fr. lineament, from L. lineamentum "contour, outline," from lineare "to reduce to a straight line," from linea (see line (n.)). Fig. sense of "a characteristic" is attested from 1630s.