1) mercy-seat, place of atonement
1a) the golden plate of propitiation on which the High Priest sprinkled the seat 7 times on the Day of Atonement symbolically reconciling Jehovah and His chosen people
1a1) the slab of gold on top of the ark of the covenant which measured 2.5 by 1.5 cubits; on it and part of it were the two golden cherubim facing each other whose outstretched wings came together above and constituted the throne of God