A woman older than 60 who stalks men much younger than herself in order to quell a post-menopausal sexual arousal. A lioness is older than the puma, cougar, and jaguar.
"Be careful bra, your cougar looks more like a lioness!"
by mullaney October 26, 2006
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A Female Lion.

Females lions do the hunting and get food for the whole pride. They hunt in packs ambushing their prey...But the dominant male gets to eat what they catch first.

They are smaller then the males and do no have a mane.
A pride can consist of one male and sometimes 30 females!
I do not have an example to go with the word lioness.
by Victoria R May 29, 2006
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The love of my life. A woman who loves me in spite of all my faults and scratches my chin and will even let me have some of her filet of fish!
by SeaLionWobbler January 22, 2013
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"English is like the milk of lioness one who drinks it becomes a lion" it was once observed by Dr B R Ambedkar .
by birbaljha May 5, 2020
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A very insecure person, male or female, who will throw you under a bus in order to get attention on themselves, and who needs to feel that they can do anything better than anyone else in the group.
Did you notice that Kim complains about everyone on our team, and how badly they do their parts of the project?

Yeah, but she can barely handle her own.

She's a mousy lioness, always putting everyone down to make herself feel better.

Haha, a mousy lioness. That really desribes her.
by not a dummy February 25, 2012
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The female version of a Nittany Lion. Often a Penn State (PSU) graduate. May also be, simply, a woman from Pennsylvania who has no affiliation to the school or a woman who is not a graduate but is a fan of PSU.
I saw a Nittany Lioness buying a PSU sweatshirt for hir PITT boyfriend. Is she nuts?

That Nittany Lioness is such a bitch . . . I don't know what her husband sees in her. We were having a "Go Michigan" party, and she sat there rooting for Penn State.
by Divadoll January 21, 2009
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