lineament (n.)youdaoicibaDictYouDict[lineament 词源字典]
early 15c., "distinctive feature of the body, outline," from Middle French lineament, from Latin lineamentum "contour, outline," literally "a line, stroke, mark," from lineare "to reduce to a straight line," from linea (see line (n.)). Figurative sense of "a characteristic" is attested from 1630s.[lineament etymology, lineament origin, 英语词源]