Most famously associated with 妲己, the legendary consort of King Zhou of Shang, portrayed as a seductive fox spirit who helped bring about the dynasty's downfall.
女 is the indexing radical and signals that 妲 is a personal name for a woman. The most famous bearer is 妲己, the legendary consort of the last Shang king Zhou Xin, blamed in folklore for the dynasty's fall.
旦 provides the sound, shifted to dá. The same phonetic feeds 但 (but) and 担 (carry). The dawn imagery - sun above the horizon - is not active in 妲, which is purely a name marker.