Jesus died for the sins of mankind on Good Friday. He was crucified, which means nailed to a cross until he died. His body was entombed. When his tomb was approached on Easter Sunday the large rock sealing the tomb had been rolled away and the tomb was empty.
Since Jesus Christ died for the sins of all mankind, the way to God the Father is through Him. Christ suffered and died so that man might live life to the fullest, with the assurance of salvation.
The meaning of Easter has gone astray in modern times. Many people only acknowledge it as a family gathering with an Easter egg hunt and a visit from the Easter bunny for the children. Adults use it as an excuse to buy new clothing and go to expensive restaurants. This isn't the meaning of Easter at all. It is a joyous occasion celebrated by Christians who know in their hearts and are willing to share with others the news of Christ's sacrifice on our behalf.
The meaning of Easter goes way beyond the physical attributes of the celebration, too. Easter is a time to renew one's faith and to feel the energy of Christ's gift in one's heart.
The true meaning of Easter is the gift of grace. We were undeserving of the sacrifice Jesus Christ made. Jesus Christ and His resurrection is the true meaning of Easter.