concerning each of two or more persons or things; especially given or done in return
Reciprocal aid. Reciprocal trade. Mutual respect. Reciprocal privileges at other clubs.
source: WordNet 3.0
Reciprocally acting or related; reciprocally receiving and giving; reciprocally given and received; reciprocal; interchanged; as, a mutual love, advantage, assistance, aversion, etc.
source: Webster 1913
adjective satellite
common to or shared by two or more parties
A common friend. The mutual interests of management and labor.
