the GNU version of the Collaborative International Dictionary of English
n. A patriarchate.
The Century Dictionary and Cyclopedia
n. The office of a patriarch.
Word Usage
"There had come, as the years went by, a few recruits; but faces were missing: the two Tabors had gone, and Uncle Joe Davey could no longer lay claim to the patriarchship; he had laid it down with a half-sigh and gone his way."