double changen.Bell-ringing one in which two pairs of bells change places; = doublen. 3b.
ΚΠ
1684 R. HowlettSchool Recreat. 91 Make a Change..The single, by changing two Notes..the double by changing Four..which is however called One double Change, and not two changes.
1872 H. T. EllacombeChurch Bells Devon iii. 39 About the year 1657, double changes came into practice.