na-adjective, noun
sharp and virile; tough-looking; masculine
Describes a person's face, features, or overall look as sharp, fierce, and full of masculine energy. Often used for men with intense, dauntless expressions.
彼の精悍な顔つきが印象的だった。
His sharp, virile features were striking.
その俳優は精悍なイメージで人気がある。
That actor is popular for his tough, masculine image.
The kanji 精 (spirit, energy) and 悍 (fierce, bold) combine to suggest a fierce, spirited sharpness. The exact historical derivation is uncertain, but the compound is conventionally associated with a tough, masculine look.