Sentence:  The seder table is laid out with special requirements. There is the seder plate on which is found foods through which the redemption story can be told. There is the <WSD>zeroah</WSD>, a shank bone of a lamb. 
Meaning of the word marked with <WSD> tags:  The bone of a lamb shank, laid on a platter as one of five symbolic foods at Passover, representing the arm of God, hence the Messiah.