gynarchy

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun Government by women.

from The Century Dictionary.

• noun Government by a woman or by women; the rule of women. Formerly also written gunarchy.

from the GNU version of the Collaborative International Dictionary of English.

• noun Government by a woman.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun politics A government ruled by a woman or women.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a political system governed by a woman