sen·e·schal·sy \-_sē, -si\noun (-es) Etymology: Middle English seneschalcie, from Middle French, from Medieval Latin senescalcia, from senescalcus seneschal (from Old High German senescalh) + Latin -ia -y 1.: a district under a seneschal < the old royal administrative divisions of bailliages and seneschalsies — D.W.S.Lidderdale > 2.: the office of a seneschal