Langer Name Meaning. German, Dutch, Danish, and Jewish (Ashkenazic): nickname for a tall man, from an inflected form of Lang. According to Gottschald, in the Franconian dialect of German this was also a term for an unskilled laborer (more fully, Handlanger).
Muscle does not weigh more than fat, any more than lead weighs more than feathers. A pound is a pound is a pound. Where the misunderstanding often comes in is that muscle is much more dense than fat, so that, by volume, it seems to weigh more. That is, a pound of muscle occupies less space than a pound of fat. In addition, because a pound of muscle burns more fat than a pound of fat, even at rest, by increasing your lean muscle tissue mass, you're helping your body burn more calories. But back to your question.
Hypertrophy of the external abdominal oblique muscle results in a prominent difference in thickness of the muscle and tendinous parts of the external oblique muscle. This thickening results in an observable line along the muscle tendon junction. Heaves is a lay term for forced expiration. Therefore, the exaggerated muscle tendon junction of the external oblique muscle is referred to as a heave line. The ventral part of the external oblique muscle is covered with an elastic deep fascia known as the tunica flava (yellow) abdominis.