cou·pler 
(kŭplər)
(kŭplər)n.
1. One that couples, especially a device for coupling two railroad cars.
2. A device connecting two organ keyboards so that they may be played together.
- Communism Peak
- Communist
- communistic
- communistically
- communitarian
- community
- community card
- community center
- community chest
- community college
- community medicine
- community policing
- community property
- community service
- communization
- communize
- commutability
- commutable
- commutate
- commutation
- commutation ticket
- commutative
- commutative group
- commutativity
- commutator