繋辞 is read as けいじ (keiji) and means copula.
けいじ
keiji
つながる
to be related (by blood)
つなぐ
to connect
つながり
connection
おせじ
flattery
しきじ
ceremonial address
しゅくじ
congratulatory address
さんじ
eulogy
ちょうじ
message of condolence
しゅうじ
figure of speech
しゃじ
apology
こじ
firm refusal
げんじ
language