Strong's #1087: gerousia (pronounced gher-oo-see'-ah)
from 1088; the eldership, i.e. (collectively) the Jewish Sanhedrin:--senate.
Thayer's Greek Lexicon:
́
gerousia
1) a senate, council of elders
1a) to denote the chief council of nations or cities
1b) the Sanhedrin
Part of Speech: noun feminine
Relation: from G1088
Usage:
This word is used 1 times:
Acts 5:21: "and called the council together, and all the senate of the"