Today we celebrate the Annunciation of the Lord. This is when the angel Gabriel told Mary that she would be the mother of Jesus.  Mary accepts and Our Lord came into our world.  Today in the Catholic church, it is a solemnity.  A solemnity is the highest rank of all liturgical days.  Although it is a Friday in Lent today we can eat meat.  Please see Canon 1251.  For more information please read; Yes, you can eat meat on Friday for the Annunciation (aleteia.org)