1 : the property of sticking together (as of glue and wood) or the joining of surfaces of different composition; "the mutual adhesiveness of cells"; "a heated hydraulic press was required for adhesion"
2 : (criminal law) money that must be forfeited by the bondsman if an accused person fails to appear in court for trial
3 : a connection that fastens things together
4 : a connection based on kinship or marriage or common interest
