ˈsenəd.ə(r), -nətə-, in rapid speech especially before a surname -n.tə- or -ndə-; sometimes -nəˌtȯ(ə)r or -ȯ(ə) noun
( -s )
Etymology: Middle English senatour, from Old French senateur, from Latin senator, from senatus senate + -or
1.
a. : a member of a senate
a Roman senator
the duke and senators of Venice greet you — Shakespeare
U.S. Senator from Connecticut
Canadian senators are appointed
b. : a member of a legislative body resembling or held to resemble a senate
most accomplished senator … in either House of Parliament — William King
2. or senator of the college of justice : lord of council and session
3. : the civil head of the government of the city of Rome under papal administration