Webster's Revised Unabridged Dictionary · 1913

Senator

Senator , noun

[Old English senatour, Old French senatour, French sénateur, from Latin senator.]

1.
A member of a senate.
The duke and senators of Venice greet you. — Shakespeare

In the United States, each State sends two senators for a term of six years to the national Congress.

2.
(O.Eng.Law) A member of the king's council; a king's councilor. — Burrill