Lioness dream meaning is explained below using 4 different sources. Each interpretation is shown with its source.

Interpretation 1 — Ibn Seerin

In a dream, a lioness represents an evil woman, or a despot who is also affectionate toward her cubs, or she could represent the daughter of a king or a ruler. Sleeping with a lioness in a dream means conquering one’s enemy. Eating the flesh of a lioness in a dream means that one may become wealthy.

(Also see Lion)

Source: Islamic Dream Interpretation Author: Ibn Seerin

Interpretation 2 — DreamForth

To dream of a lioness symbolizes graceful family leadership.

The lioness is a strong mother with regal elegance who guides and protects her children.

To dream that you are a lioness indicates you feel a strong connection to family and you may need to strengthen your place as leader in their eyes.

Source: Dream Symbols and Analysis Author: DreamForth

Interpretation 3 — Stephen Girard

Dreaming of seeing a lioness is good to the rich or poor; marriage is also hereby signified; those that have children, upon this dream, shall lose them; but if you dream that she destroys you, it is death to the dreamer; for persons at sea to dream of this animal, is a sign of a storm. 
Source: The Mystic Dream Book Author: Stephen Girard

Interpretation 4 — Internet Archive - Anonymous

Dreaming of seeing a Lioness is good to the rich or poor.
Source: Mystic Dream Book Author: Internet Archive - Anonymous