A woman who is seen as a strong, independent woman that takes good care of affairs and is heavily involved in politics, business, or some other industry in which some may have earlier deemed her unable to be successful at. Woman may sometimes be omitted and it can also be used as a masculine term.
Margaret Thatcher is definitely a Sea Lion Woman.

We are Sea Lion Women because they didn't think we could manage stocks but we've made millions of dollars.

She's a Sea Lion because she was able to take care of her children after her husband's death without assistance in spite of her being a stay-at-home mom before her husband passed.
by July 9, 2009
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