Left meat-flesh radical, the body-part form of
肉. Visually identical to
月 (moon) but semantically separate: it always points to flesh, organ, or animal-product meaning. It indexes
腥 in the meat-related family:
腐 rotten,
膻 mutton-smelling,
臊 fishy-sweat.
腥 is the raw-fish or raw-meat smell — the radical commits it to butcher-shop semantics.